55312940 has 24 divisors (see below), whose sum is σ = 116296992. Its totient is φ = 22098560.

The previous prime is 55312927. The next prime is 55312963. The reversal of 55312940 is 4921355.

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, 31280 + ... + 33000.

It is an arithmetic number, because the mean of its divisors is an integer number (4845708).

Almost surely, 2^55312940 is an apocalyptic number.

It is an amenable number.

55312940 is an abundant number, since it is smaller than the sum of its proper divisors (60984052).

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

55312940 is a wasteful number, since it uses less digits than its factorization.

55312940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337 (or 3335 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 55312940 is about 7437.2669711393. The cubic root of 55312940 is about 381.0151526869.

The spelling of 55312940 in words is "fifty-five million, three hundred twelve thousand, nine hundred forty".