57621632 has 16 divisors (see below), whose sum is σ = 114793350. Its totient is φ = 28810752.

The previous prime is 57621631. The next prime is 57621649. The reversal of 57621632 is 23612675.

57621632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 50353216 + 7268416 = 7096^2 + 2696^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (57621631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224957 + ... + 225212.

Almost surely, 2^57621632 is an apocalyptic number.

It is an amenable number.

57621632 is a deficient number, since it is larger than the sum of its proper divisors (57171718).

57621632 is an equidigital number, since it uses as much as digits as its factorization.

57621632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450183 (or 450171 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 57621632 is about 7590.8913837572. The cubic root of 57621632 is about 386.2440937783.

The spelling of 57621632 in words is "fifty-seven million, six hundred twenty-one thousand, six hundred thirty-two".