57106420 has 48 divisors (see below), whose sum is σ = 137507328. Its totient is φ = 19514880.

The previous prime is 57106411. The next prime is 57106453. The reversal of 57106420 is 2460175.

It is a super-2 number, since 2×57106420² = 6522286410432800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64380 + ... + 65260.

It is an arithmetic number, because the mean of its divisors is an integer number (2864736).

Almost surely, 2^57106420 is an apocalyptic number.

It is an amenable number.

57106420 is an abundant number, since it is smaller than the sum of its proper divisors (80400908).

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

57106420 is a wasteful number, since it uses less digits than its factorization.

57106420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360 (or 1358 counting only the distinct ones).

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

The square root of 57106420 is about 7556.8789854013. The cubic root of 57106420 is about 385.0894715316.

Adding to 57106420 its reverse (2460175), we get a palindrome (59566595).

The spelling of 57106420 in words is "fifty-seven million, one hundred six thousand, four hundred twenty".