56921632 has 12 divisors (see below), whose sum is σ = 112064526. Its totient is φ = 28460800.

The previous prime is 56921621. The next prime is 56921687. The reversal of 56921632 is 23612965.

It can be written as a sum of positive squares in only one way, i.e., 50751376 + 6170256 = 7124^2 + 2484^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 889369 + ... + 889432.

Almost surely, 2^56921632 is an apocalyptic number.

It is an amenable number.

56921632 is a deficient number, since it is larger than the sum of its proper divisors (55142894).

56921632 is a wasteful number, since it uses less digits than its factorization.

56921632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778811 (or 1778803 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 56921632 is about 7544.6426025359. The cubic root of 56921632 is about 384.6736583540.

It can be divided in two parts, 569 and 21632, that added together give a square (22201 = 149²).

The spelling of 56921632 in words is "fifty-six million, nine hundred twenty-one thousand, six hundred thirty-two".