55136406 has 64 divisors (see below), whose sum is σ = 128798208. Its totient is φ = 15579648.

The previous prime is 55136387. The next prime is 55136413. The reversal of 55136406 is 60463155.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56535 + ... + 57501.

It is an arithmetic number, because the mean of its divisors is an integer number (2012472).

Almost surely, 2^55136406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55136406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64399104).

55136406 is an abundant number, since it is smaller than the sum of its proper divisors (73661802).

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

55136406 is a wasteful number, since it uses less digits than its factorization.

55136406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 55136406 is about 7425.3892827245. The cubic root of 55136406 is about 380.6093777578.

The spelling of 55136406 in words is "fifty-five million, one hundred thirty-six thousand, four hundred six".