55976445 has 48 divisors (see below), whose sum is σ = 112275072. Its totient is φ = 25269120.

The previous prime is 55976443. The next prime is 55976491. The reversal of 55976445 is 54467955.

It is not a de Polignac number, because 55976445 - 2¹ = 55976443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55976445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55976441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25075 + ... + 27215.

It is an arithmetic number, because the mean of its divisors is an integer number (2339064).

Almost surely, 2^55976445 is an apocalyptic number.

It is an amenable number.

55976445 is an abundant number, since it is smaller than the sum of its proper divisors (56298627).

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

55976445 is a wasteful number, since it uses less digits than its factorization.

55976445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242 (or 2239 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 55976445 is about 7481.7407733762. The cubic root of 55976445 is about 382.5325872531.

The spelling of 55976445 in words is "fifty-five million, nine hundred seventy-six thousand, four hundred forty-five".