57320000 has 70 divisors (see below), whose sum is σ = 142234158. Its totient is φ = 22912000.

The previous prime is 57319981. The next prime is 57320027. The reversal of 57320000 is 2375.

It can be written as a sum of positive squares in 5 ways, for example, as 13017664 + 44302336 = 3608^2 + 6656^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39284 + ... + 40716.

Almost surely, 2^57320000 is an apocalyptic number.

57320000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71117079).

57320000 is an abundant number, since it is smaller than the sum of its proper divisors (84914158).

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

57320000 is an equidigital number, since it uses as much as digits as its factorization.

57320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465 (or 1440 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 57320000 is about 7570.9972922991. The cubic root of 57320000 is about 385.5689569426.

Adding to 57320000 its reverse (2375), we get a palindrome (57322375).

The spelling of 57320000 in words is "fifty-seven million, three hundred twenty thousand".