55459240 has 32 divisors (see below), whose sum is σ = 125393760. Its totient is φ = 22075200.

The previous prime is 55459237. The next prime is 55459289. The reversal of 55459240 is 4295455.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 55459196 and 55459205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5155 + ... + 11725.

It is an arithmetic number, because the mean of its divisors is an integer number (3918555).

Almost surely, 2^55459240 is an apocalyptic number.

It is an amenable number.

55459240 is an abundant number, since it is smaller than the sum of its proper divisors (69934520).

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

55459240 is a wasteful number, since it uses less digits than its factorization.

55459240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6793 (or 6789 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 55459240 is about 7447.0960783382. The cubic root of 55459240 is about 381.3507790553.

The spelling of 55459240 in words is "fifty-five million, four hundred fifty-nine thousand, two hundred forty".