57426257 has 8 divisors (see below), whose sum is σ = 67404096. Its totient is φ = 47891952.

The previous prime is 57426247. The next prime is 57426283. The reversal of 57426257 is 75262475.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 57426257 - 2¹⁸ = 57164113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57426257.

It is not an unprimeable number, because it can be changed into a prime (57426247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110603 + ... + 111120.

It is an arithmetic number, because the mean of its divisors is an integer number (8425512).

Almost surely, 2^57426257 is an apocalyptic number.

It is an amenable number.

57426257 is a deficient number, since it is larger than the sum of its proper divisors (9977839).

57426257 is a wasteful number, since it uses less digits than its factorization.

57426257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221767.

The product of its digits is 117600, while the sum is 38.

The square root of 57426257 is about 7578.0114146127. The cubic root of 57426257 is about 385.8070594723.

The spelling of 57426257 in words is "fifty-seven million, four hundred twenty-six thousand, two hundred fifty-seven".