55408608 has 36 divisors (see below), whose sum is σ = 157569048. Its totient is φ = 18469440.

The previous prime is 55408607. The next prime is 55408609. The reversal of 55408608 is 80680455.

It is a happy number.

55408608 is a `hidden beast` number, since 5 + 5 + 40 + 8 + 608 = 666.

It is an interprime number because it is at equal distance from previous prime (55408607) and next prime (55408609).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×55408608² = 6140227680995328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55408607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95908 + ... + 96483.

It is an arithmetic number, because the mean of its divisors is an integer number (4376918).

Almost surely, 2^55408608 is an apocalyptic number.

It is an amenable number.

55408608 is an abundant number, since it is smaller than the sum of its proper divisors (102160440).

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

55408608 is a wasteful number, since it uses less digits than its factorization.

55408608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192407 (or 192396 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 55408608 is about 7443.6958562263. The cubic root of 55408608 is about 381.2346912065.

The spelling of 55408608 in words is "fifty-five million, four hundred eight thousand, six hundred eight".