55039480 has 16 divisors (see below), whose sum is σ = 123838920. Its totient is φ = 22015776.

The previous prime is 55039471. The next prime is 55039499. The reversal of 55039480 is 8493055.

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, 687954 + ... + 688033.

Almost surely, 2^55039480 is an apocalyptic number.

It is an amenable number.

55039480 is an abundant number, since it is smaller than the sum of its proper divisors (68799440).

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

55039480 is a wasteful number, since it uses less digits than its factorization.

55039480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375998 (or 1375994 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 55039480 is about 7418.8597506625. The cubic root of 55039480 is about 380.3862185931.

The spelling of 55039480 in words is "fifty-five million, thirty-nine thousand, four hundred eighty".