57022520 has 32 divisors (see below), whose sum is σ = 133881120. Its totient is φ = 21816960.

The previous prime is 57022501. The next prime is 57022529. The reversal of 57022520 is 2522075.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57022529) 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, 30071 + ... + 31910.

It is an arithmetic number, because the mean of its divisors is an integer number (4183785).

Almost surely, 2^57022520 is an apocalyptic number.

It is an amenable number.

57022520 is an abundant number, since it is smaller than the sum of its proper divisors (76858600).

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

57022520 is a wasteful number, since it uses less digits than its factorization.

57022520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62015 (or 62011 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 57022520 is about 7551.3257114231. The cubic root of 57022520 is about 384.9007896389.

Adding to 57022520 its reverse (2522075), we get a palindrome (59544595).

The spelling of 57022520 in words is "fifty-seven million, twenty-two thousand, five hundred twenty".