57216700 has 36 divisors (see below), whose sum is σ = 128172352. Its totient is φ = 22147200.

The previous prime is 57216697. The next prime is 57216707. The reversal of 57216700 is 761275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57216707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6129 + ... + 12328.

Almost surely, 2^57216700 is an apocalyptic number.

57216700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

57216700 is an abundant number, since it is smaller than the sum of its proper divisors (70955652).

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

57216700 is a wasteful number, since it uses less digits than its factorization.

57216700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18502 (or 18495 counting only the distinct ones).

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

The square root of 57216700 is about 7564.1721291890. The cubic root of 57216700 is about 385.3371982573.

Adding to 57216700 its reverse (761275), we get a palindrome (57977975).

It can be divided in two parts, 5721 and 6700, that added together give a palindrome (12421).

The spelling of 57216700 in words is "fifty-seven million, two hundred sixteen thousand, seven hundred".