55932640 has 24 divisors (see below), whose sum is σ = 132141240. Its totient is φ = 22372992.

The previous prime is 55932629. The next prime is 55932659. The reversal of 55932640 is 4623955.

It is a junction number, because it is equal to n+sod(n) for n = 55932596 and 55932605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174630 + ... + 174949.

It is an arithmetic number, because the mean of its divisors is an integer number (5505885).

Almost surely, 2^55932640 is an apocalyptic number.

It is an amenable number.

55932640 is an abundant number, since it is smaller than the sum of its proper divisors (76208600).

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

55932640 is a wasteful number, since it uses less digits than its factorization.

55932640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349594 (or 349586 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 55932640 is about 7478.8127400009. The cubic root of 55932640 is about 382.4327761452.

The spelling of 55932640 in words is "fifty-five million, nine hundred thirty-two thousand, six hundred forty".