57021480 has 48 divisors (see below), whose sum is σ = 185320980. Its totient is φ = 15205632.

The previous prime is 57021479. The next prime is 57021487. The reversal of 57021480 is 8412075.

57021480 is a `hidden beast` number, since 570 + 2 + 14 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 53494596 + 3526884 = 7314^2 + 1878^2 .

It is a super-3 number, since 3×57021480³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (57021487) 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, 78837 + ... + 79556.

Almost surely, 2^57021480 is an apocalyptic number.

It is an amenable number.

57021480 is an abundant number, since it is smaller than the sum of its proper divisors (128299500).

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

57021480 is a wasteful number, since it uses less digits than its factorization.

57021480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158410 (or 158403 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 57021480 is about 7551.2568490285. The cubic root of 57021480 is about 384.8984496321.

The spelling of 57021480 in words is "fifty-seven million, twenty-one thousand, four hundred eighty".