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2157053 = 21110223
BaseRepresentation
bin1000001110100111111101
311001120220212
420032213331
51023011203
6114122205
724222533
oct10164775
94046825
102157053
111243698
12880365
135a6a82
14402153
152c91d8
hex20e9fd

2157053 has 4 divisors (see below), whose sum is σ = 2167488. Its totient is φ = 2146620.

The previous prime is 2157041. The next prime is 2157091. The reversal of 2157053 is 3507512.

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.

It is a cyclic number.

It is not a de Polignac number, because 2157053 - 24 = 2157037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4901 + ... + 5322.

It is an arithmetic number, because the mean of its divisors is an integer number (541872).

22157053 is an apocalyptic number.

It is an amenable number.

2157053 is a deficient number, since it is larger than the sum of its proper divisors (10435).

2157053 is a wasteful number, since it uses less digits than its factorization.

2157053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10434.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 2157053 is about 1468.6909137051. The cubic root of 2157053 is about 129.2072665065.

The spelling of 2157053 in words is "two million, one hundred fifty-seven thousand, fifty-three".

Divisors: 1 211 10223 2157053