55994240 has 32 divisors (see below), whose sum is σ = 133862760. Its totient is φ = 22397440.

The previous prime is 55994231. The next prime is 55994251. The reversal of 55994240 is 4249955.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 55994194 and 55994203.

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, 43106 + ... + 44385.

Almost surely, 2^55994240 is an apocalyptic number.

It is an amenable number.

55994240 is an abundant number, since it is smaller than the sum of its proper divisors (77868520).

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

55994240 is an equidigital number, since it uses as much as digits as its factorization.

55994240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87510 (or 87498 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 55994240 is about 7482.9299074627. The cubic root of 55994240 is about 382.5731188623.

The spelling of 55994240 in words is "fifty-five million, nine hundred ninety-four thousand, two hundred forty".