57023520 has 48 divisors (see below), whose sum is σ = 179625600. Its totient is φ = 15206144.

The previous prime is 57023501. The next prime is 57023521. The reversal of 57023520 is 2532075.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (57023521) 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, 58920 + ... + 59879.

It is an arithmetic number, because the mean of its divisors is an integer number (3742200).

Almost surely, 2^57023520 is an apocalyptic number.

It is an amenable number.

57023520 is an abundant number, since it is smaller than the sum of its proper divisors (122602080).

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

57023520 is a wasteful number, since it uses less digits than its factorization.

57023520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118817 (or 118809 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 57023520 is about 7551.3919246719. The cubic root of 57023520 is about 384.9030396186.

Adding to 57023520 its reverse (2532075), we get a palindrome (59555595).

It can be divided in two parts, 570 and 23520, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 57023520 in words is "fifty-seven million, twenty-three thousand, five hundred twenty".