55551408 has 40 divisors (see below), whose sum is σ = 156555456. Its totient is φ = 16833600.

The previous prime is 55551403. The next prime is 55551409. The reversal of 55551408 is 80415555.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (55551401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52078 + ... + 53133.

Almost surely, 2^55551408 is an apocalyptic number.

It is an amenable number.

55551408 is an abundant number, since it is smaller than the sum of its proper divisors (101004048).

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

55551408 is a wasteful number, since it uses less digits than its factorization.

55551408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105233 (or 105227 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The square root of 55551408 is about 7453.2816933214. The cubic root of 55551408 is about 381.5619184163.

The spelling of 55551408 in words is "fifty-five million, five hundred fifty-one thousand, four hundred eight".