55891316 has 12 divisors (see below), whose sum is σ = 105333732. Its totient is φ = 25795968.

The previous prime is 55891289. The next prime is 55891321. The reversal of 55891316 is 61319855.

It can be written as a sum of positive squares in 2 ways, for example, as 34175716 + 21715600 = 5846^2 + 4660^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55891316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537365 + ... + 537468.

It is an arithmetic number, because the mean of its divisors is an integer number (8777811).

Almost surely, 2^55891316 is an apocalyptic number.

It is an amenable number.

55891316 is a deficient number, since it is larger than the sum of its proper divisors (49442416).

55891316 is a wasteful number, since it uses less digits than its factorization.

55891316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074850 (or 1074848 counting only the distinct ones).

The product of its digits is 32400, while the sum is 38.

The square root of 55891316 is about 7476.0494915430. The cubic root of 55891316 is about 382.3385702955.

The spelling of 55891316 in words is "fifty-five million, eight hundred ninety-one thousand, three hundred sixteen".