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57079853 = 229249257
BaseRepresentation
bin1101100110111…
…1100000101101
310222101221211122
43121233200231
5104103023403
65355230325
71262112365
oct331574055
9128357748
1057079853
112a246a36
12171483a5
13ba96a7c
14781b9a5
155027838
hex366f82d

57079853 has 4 divisors (see below), whose sum is σ = 57329340. Its totient is φ = 56830368.

The previous prime is 57079843. The next prime is 57079873. The reversal of 57079853 is 35897075.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55547209 + 1532644 = 7453^2 + 1238^2 .

It is a cyclic number.

It is not a de Polignac number, because 57079853 - 28 = 57079597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57079823) 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, 124400 + ... + 124857.

It is an arithmetic number, because the mean of its divisors is an integer number (14332335).

Almost surely, 257079853 is an apocalyptic number.

It is an amenable number.

57079853 is a deficient number, since it is larger than the sum of its proper divisors (249487).

57079853 is a wasteful number, since it uses less digits than its factorization.

57079853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249486.

The product of its (nonzero) digits is 264600, while the sum is 44.

The square root of 57079853 is about 7555.1209785152. The cubic root of 57079853 is about 385.0297452703.

The spelling of 57079853 in words is "fifty-seven million, seventy-nine thousand, eight hundred fifty-three".

Divisors: 1 229 249257 57079853