55603968 has 72 divisors (see below), whose sum is σ = 169145088. Its totient is φ = 15885312.

The previous prime is 55603939. The next prime is 55603973. The reversal of 55603968 is 86930655.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 205 + ... + 10547.

Almost surely, 2^55603968 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 55603968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84572544).

55603968 is an abundant number, since it is smaller than the sum of its proper divisors (113541120).

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

55603968 is a wasteful number, since it uses less digits than its factorization.

55603968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10369 (or 10355 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 55603968 is about 7456.8068232991. The cubic root of 55603968 is about 381.6822188341.

The spelling of 55603968 in words is "fifty-five million, six hundred three thousand, nine hundred sixty-eight".