57122620 has 24 divisors (see below), whose sum is σ = 121993200. Its totient is φ = 22461312.

The previous prime is 57122617. The next prime is 57122623. The reversal of 57122620 is 2622175.

It is an interprime number because it is at equal distance from previous prime (57122617) and next prime (57122623).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57122623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23025 + ... + 25384.

It is an arithmetic number, because the mean of its divisors is an integer number (5083050).

Almost surely, 2^57122620 is an apocalyptic number.

It is an amenable number.

57122620 is an abundant number, since it is smaller than the sum of its proper divisors (64870580).

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

57122620 is a wasteful number, since it uses less digits than its factorization.

57122620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48477 (or 48475 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 57122620 is about 7557.9507804695. The cubic root of 57122620 is about 385.1258822634.

Adding to 57122620 its reverse (2622175), we get a palindrome (59744795).

The spelling of 57122620 in words is "fifty-seven million, one hundred twenty-two thousand, six hundred twenty".