55658540 has 48 divisors (see below), whose sum is σ = 138196800. Its totient is φ = 18423552.

The previous prime is 55658539. The next prime is 55658557. The reversal of 55658540 is 4585655.

It is a junction number, because it is equal to n+sod(n) for n = 55658494 and 55658503.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2795 + ... + 10914.

It is an arithmetic number, because the mean of its divisors is an integer number (2879100).

Almost surely, 2^55658540 is an apocalyptic number.

It is an amenable number.

55658540 is an abundant number, since it is smaller than the sum of its proper divisors (82538260).

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

55658540 is a wasteful number, since it uses less digits than its factorization.

55658540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13754 (or 13752 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 38.

The square root of 55658540 is about 7460.4651329525. The cubic root of 55658540 is about 381.8070441677.

The spelling of 55658540 in words is "fifty-five million, six hundred fifty-eight thousand, five hundred forty".