57100020 has 48 divisors (see below), whose sum is σ = 161544768. Its totient is φ = 15068160.

The previous prime is 57099989. The next prime is 57100031. The reversal of 57100020 is 2000175.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 915 + ... + 10725.

It is an arithmetic number, because the mean of its divisors is an integer number (3365516).

Almost surely, 2^57100020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80772384).

57100020 is an abundant number, since it is smaller than the sum of its proper divisors (104444748).

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

57100020 is a wasteful number, since it uses less digits than its factorization.

57100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9920 (or 9918 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 57100020 is about 7556.4555182969. The cubic root of 57100020 is about 385.0750851474.

Adding to 57100020 its reverse (2000175), we get a palindrome (59100195).

The spelling of 57100020 in words is "fifty-seven million, one hundred thousand, twenty".