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57426231 = 397197341
BaseRepresentation
bin1101101100010…
…0000100110111
311000001112222110
43123010010313
5104200114411
65410502103
71265054262
oct333040467
9130045873
1057426231
112a4631a5
1217294933
13bb88625
1478abcd9
1550952a6
hex36c4137

57426231 has 8 divisors (see below), whose sum is σ = 77358064. Its totient is φ = 37889280.

The previous prime is 57426211. The next prime is 57426247. The reversal of 57426231 is 13262475.

57426231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57426231 - 218 = 57164087 is a prime.

It is a super-2 number, since 2×574262312 = 6595544013730722, 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 (57426211) 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 7 ways as a sum of consecutive naturals, for example, 98380 + ... + 98961.

It is an arithmetic number, because the mean of its divisors is an integer number (9669758).

Almost surely, 257426231 is an apocalyptic number.

57426231 is a deficient number, since it is larger than the sum of its proper divisors (19931833).

57426231 is a wasteful number, since it uses less digits than its factorization.

57426231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197441.

The product of its digits is 10080, while the sum is 30.

The square root of 57426231 is about 7578.0096991229. The cubic root of 57426231 is about 385.8070012470.

The spelling of 57426231 in words is "fifty-seven million, four hundred twenty-six thousand, two hundred thirty-one".

Divisors: 1 3 97 291 197341 592023 19142077 57426231