55406090 has 32 divisors (see below), whose sum is σ = 105416640. Its totient is φ = 20908800.

The previous prime is 55406081. The next prime is 55406093. The reversal of 55406090 is 9060455.

55406090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55406093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62450 + ... + 63330.

It is an arithmetic number, because the mean of its divisors is an integer number (3294270).

Almost surely, 2^55406090 is an apocalyptic number.

55406090 is a deficient number, since it is larger than the sum of its proper divisors (50010550).

55406090 is a wasteful number, since it uses less digits than its factorization.

55406090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 55406090 is about 7443.5267178939. The cubic root of 55406090 is about 381.2289161502.

The spelling of 55406090 in words is "fifty-five million, four hundred six thousand, ninety".