55544405 has 16 divisors (see below), whose sum is σ = 78633984. Its totient is φ = 36858240.

The previous prime is 55544341. The next prime is 55544413. The reversal of 55544405 is 50444555.

It is not a de Polignac number, because 55544405 - 2⁶ = 55544341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24512 + ... + 26681.

It is an arithmetic number, because the mean of its divisors is an integer number (4914624).

Almost surely, 2^55544405 is an apocalyptic number.

It is an amenable number.

55544405 is a deficient number, since it is larger than the sum of its proper divisors (23089579).

55544405 is a wasteful number, since it uses less digits than its factorization.

55544405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51236.

The product of its (nonzero) digits is 40000, while the sum is 32.

The square root of 55544405 is about 7452.8118854564. The cubic root of 55544405 is about 381.5458840768.

The spelling of 55544405 in words is "fifty-five million, five hundred forty-four thousand, four hundred five".