55507408 has 40 divisors (see below), whose sum is σ = 118403136. Its totient is φ = 24998400.

The previous prime is 55507393. The next prime is 55507411. The reversal of 55507408 is 80470555.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 18493 + ... + 21283.

Almost surely, 2^55507408 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 55507408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59201568).

55507408 is an abundant number, since it is smaller than the sum of its proper divisors (62895728).

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

55507408 is a wasteful number, since it uses less digits than its factorization.

55507408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923 (or 2917 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 55507408 is about 7450.3293886915. The cubic root of 55507408 is about 381.4611519400.

The spelling of 55507408 in words is "fifty-five million, five hundred seven thousand, four hundred eight".