57403231 has 2 divisors, whose sum is σ = 57403232. Its totient is φ = 57403230.

The previous prime is 57403219. The next prime is 57403277. The reversal of 57403231 is 13230475.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57403231 - 2²¹ = 55306079 is a prime.

It is a super-2 number, since 2×57403231² = 6590261858478722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57403196 and 57403205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57403211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28701615 + 28701616.

It is an arithmetic number, because the mean of its divisors is an integer number (28701616).

Almost surely, 2^57403231 is an apocalyptic number.

57403231 is a deficient number, since it is larger than the sum of its proper divisors (1).

57403231 is an equidigital number, since it uses as much as digits as its factorization.

57403231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 57403231 is about 7576.4919982799. The cubic root of 57403231 is about 385.7554873552.

The spelling of 57403231 in words is "fifty-seven million, four hundred three thousand, two hundred thirty-one".