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1057141 = 1955639
BaseRepresentation
bin100000010000101110101
31222201010101
410002011311
5232312031
634354101
711662021
oct4020565
91881111
101057141
11662278
1242b931
132b0237
141d7381
1515d361
hex102175

1057141 has 4 divisors (see below), whose sum is σ = 1112800. Its totient is φ = 1001484.

The previous prime is 1057129. The next prime is 1057157. The reversal of 1057141 is 1417501.

1057141 = T838 + T839 + T840.

1057141 = 342 + 352 + ... + 1472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1417501 = 1797919.

It is a cyclic number.

It is not a de Polignac number, because 1057141 - 27 = 1057013 is a prime.

It is a super-2 number, since 2×10571412 = 2235094187762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 55639 = 1057141 / (1 + 0 + 5 + 7 + 1 + 4 + 1).

It is a Duffinian number.

1057141 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27801 + ... + 27838.

It is an arithmetic number, because the mean of its divisors is an integer number (278200).

21057141 is an apocalyptic number.

1057141 is the 840-th centered triangular number.

It is an amenable number.

1057141 is a deficient number, since it is larger than the sum of its proper divisors (55659).

1057141 is an equidigital number, since it uses as much as digits as its factorization.

1057141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55658.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 1057141 is about 1028.1736234703. The cubic root of 1057141 is about 101.8695307388.

The spelling of 1057141 in words is "one million, fifty-seven thousand, one hundred forty-one".

Divisors: 1 19 55639 1057141