57521484 has 18 divisors (see below), whose sum is σ = 145401620. Its totient is φ = 19173816.

The previous prime is 57521473. The next prime is 57521491. The reversal of 57521484 is 48412575.

57521484 is a `hidden beast` number, since 57 + 521 + 4 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×57521484² = 6617442243124512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1597819 = 57521484 / (5 + 7 + 5 + 2 + 1 + 4 + 8 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 798874 + ... + 798945.

Almost surely, 2^57521484 is an apocalyptic number.

It is an amenable number.

57521484 is an abundant number, since it is smaller than the sum of its proper divisors (87880136).

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

57521484 is a wasteful number, since it uses less digits than its factorization.

57521484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597829 (or 1597824 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 57521484 is about 7584.2919247613. The cubic root of 57521484 is about 386.0201963535.

The spelling of 57521484 in words is "fifty-seven million, five hundred twenty-one thousand, four hundred eighty-four".