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57116269 = 78159467
BaseRepresentation
bin1101100111100…
…0011001101101
310222110210210101
43121320121231
5104110210034
65400111101
71262323510
oct331703155
9128423711
1057116269
112a271331
1217165491
13baaa512
14782ad77
155033514
hex367866d

57116269 has 4 divisors (see below), whose sum is σ = 65275744. Its totient is φ = 48956796.

The previous prime is 57116249. The next prime is 57116273. The reversal of 57116269 is 96261175.

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 not a de Polignac number, because 57116269 - 25 = 57116237 is a prime.

It is a super-2 number, since 2×571162692 = 6524536368960722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57116249) 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, 4079727 + ... + 4079740.

It is an arithmetic number, because the mean of its divisors is an integer number (16318936).

Almost surely, 257116269 is an apocalyptic number.

It is an amenable number.

57116269 is a deficient number, since it is larger than the sum of its proper divisors (8159475).

57116269 is an equidigital number, since it uses as much as digits as its factorization.

57116269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8159474.

The product of its digits is 22680, while the sum is 37.

The square root of 57116269 is about 7557.5306152208. The cubic root of 57116269 is about 385.1116087285. Note that the first 3 decimals are identical.

The spelling of 57116269 in words is "fifty-seven million, one hundred sixteen thousand, two hundred sixty-nine".

Divisors: 1 7 8159467 57116269