55542445 has 16 divisors (see below), whose sum is σ = 76354560. Its totient is φ = 37995264.

The previous prime is 55542437. The next prime is 55542467. The reversal of 55542445 is 54424555.

It is a cyclic number.

It is not a de Polignac number, because 55542445 - 2³ = 55542437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55542445.

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, 15109 + ... + 18421.

It is an arithmetic number, because the mean of its divisors is an integer number (4772160).

Almost surely, 2^55542445 is an apocalyptic number.

It is an amenable number.

55542445 is a deficient number, since it is larger than the sum of its proper divisors (20812115).

55542445 is a wasteful number, since it uses less digits than its factorization.

55542445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804.

The product of its digits is 80000, while the sum is 34.

The square root of 55542445 is about 7452.6803903025. The cubic root of 55542445 is about 381.5413961437.

The spelling of 55542445 in words is "fifty-five million, five hundred forty-two thousand, four hundred forty-five".