55440364 has 36 divisors (see below), whose sum is σ = 115630200. Its totient is φ = 23177280.

The previous prime is 55440337. The next prime is 55440391. The reversal of 55440364 is 46304455.

It is an interprime number because it is at equal distance from previous prime (55440337) and next prime (55440391).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4587 + ... + 11485.

It is an arithmetic number, because the mean of its divisors is an integer number (3211950).

Almost surely, 2^55440364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55440364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57815100).

55440364 is an abundant number, since it is smaller than the sum of its proper divisors (60189836).

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

55440364 is a wasteful number, since it uses less digits than its factorization.

55440364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6958 (or 6949 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 55440364 is about 7445.8286308510. The cubic root of 55440364 is about 381.3075088738.

The spelling of 55440364 in words is "fifty-five million, four hundred forty thousand, three hundred sixty-four".