55442916 has 81 divisors (see below), whose sum is σ = 150943611. Its totient is φ = 17155584.

The previous prime is 55442897. The next prime is 55442927. The reversal of 55442916 is 61924455.

The square root of 55442916 is 7446.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 7001316 + 48441600 = 2646^2 + 6960^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 759456 + ... + 759528.

Almost surely, 2^55442916 is an apocalyptic number.

55442916 is the 7446-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55442916

55442916 is an abundant number, since it is smaller than the sum of its proper divisors (95500695).

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

55442916 is a wasteful number, since it uses less digits than its factorization.

55442916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 95 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The cubic root of 55442916 is about 381.3133594958.

Multiplying 55442916 by its sum of digits (36), we get a square (1995944976 = 44676²).

55442916 divided by its sum of digits (36) gives a square (1540081 = 1241²).

The spelling of 55442916 in words is "fifty-five million, four hundred forty-two thousand, nine hundred sixteen".