57263538 has 16 divisors (see below), whose sum is σ = 115430400. Its totient is φ = 18937296.

The previous prime is 57263533. The next prime is 57263539. The reversal of 57263538 is 83536275.

It is a super-2 number, since 2×57263538² = 6558225568554888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57263496 and 57263505.

It is not an unprimeable number, because it can be changed into a prime (57263533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36813 + ... + 38336.

It is an arithmetic number, because the mean of its divisors is an integer number (7214400).

Almost surely, 2^57263538 is an apocalyptic number.

57263538 is an abundant number, since it is smaller than the sum of its proper divisors (58166862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57263538 is a wasteful number, since it uses less digits than its factorization.

57263538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75281.

The product of its digits is 151200, while the sum is 39.

The square root of 57263538 is about 7567.2675385505. The cubic root of 57263538 is about 385.4423161750.

The spelling of 57263538 in words is "fifty-seven million, two hundred sixty-three thousand, five hundred thirty-eight".