55580445 has 16 divisors (see below), whose sum is σ = 98809920. Its totient is φ = 29642832.

The previous prime is 55580431. The next prime is 55580471. The reversal of 55580445 is 54408555.

It is not a de Polignac number, because 55580445 - 2¹⁶ = 55514909 is a prime.

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, 205719 + ... + 205988.

It is an arithmetic number, because the mean of its divisors is an integer number (6175620).

Almost surely, 2^55580445 is an apocalyptic number.

It is an amenable number.

55580445 is a deficient number, since it is larger than the sum of its proper divisors (43229475).

55580445 is a wasteful number, since it uses less digits than its factorization.

55580445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411721 (or 411715 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The square root of 55580445 is about 7455.2293727289. The cubic root of 55580445 is about 381.6283882801.

The spelling of 55580445 in words is "fifty-five million, five hundred eighty thousand, four hundred forty-five".