55540916 has 12 divisors (see below), whose sum is σ = 100548420. Its totient is φ = 26812800.

The previous prime is 55540913. The next prime is 55540949. The reversal of 55540916 is 61904555.

It can be written as a sum of positive squares in 2 ways, for example, as 30580900 + 24960016 = 5530^2 + 4996^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55540913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239285 + ... + 239516.

It is an arithmetic number, because the mean of its divisors is an integer number (8379035).

Almost surely, 2^55540916 is an apocalyptic number.

It is an amenable number.

55540916 is a deficient number, since it is larger than the sum of its proper divisors (45007504).

55540916 is a wasteful number, since it uses less digits than its factorization.

55540916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478834 (or 478832 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 55540916 is about 7452.5778090537. The cubic root of 55540916 is about 381.5378950245.

The spelling of 55540916 in words is "fifty-five million, five hundred forty thousand, nine hundred sixteen".