57123020 has 24 divisors (see below), whose sum is σ = 121083984. Its totient is φ = 22634816.

The previous prime is 57123019. The next prime is 57123041. The reversal of 57123020 is 2032175.

57123020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 57122983 and 57123001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11207 + ... + 15486.

It is an arithmetic number, because the mean of its divisors is an integer number (5045166).

Almost surely, 2^57123020 is an apocalyptic number.

It is an amenable number.

57123020 is an abundant number, since it is smaller than the sum of its proper divisors (63960964).

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

57123020 is a wasteful number, since it uses less digits than its factorization.

57123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26809 (or 26807 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 57123020 is about 7557.9772426225. The cubic root of 57123020 is about 385.1267812067.

Adding to 57123020 its reverse (2032175), we get a palindrome (59155195).

The spelling of 57123020 in words is "fifty-seven million, one hundred twenty-three thousand, twenty".