57761020 has 24 divisors (see below), whose sum is σ = 121698864. Its totient is φ = 23028096.

The previous prime is 57761009. The next prime is 57761021. The reversal of 57761020 is 2016775.

It is a self number, because there is not a number n which added to its sum of digits gives 57761020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57761021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1647 + ... + 10873.

It is an arithmetic number, because the mean of its divisors is an integer number (5070786).

Almost surely, 2^57761020 is an apocalyptic number.

It is an amenable number.

57761020 is an abundant number, since it is smaller than the sum of its proper divisors (63937844).

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

57761020 is a wasteful number, since it uses less digits than its factorization.

57761020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9549 (or 9547 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 57761020 is about 7600.0671049669. The cubic root of 57761020 is about 386.5552873152. Note that the first 3 decimals are identical.

Adding to 57761020 its reverse (2016775), we get a palindrome (59777795).

The spelling of 57761020 in words is "fifty-seven million, seven hundred sixty-one thousand, twenty".