55177616 has 20 divisors (see below), whose sum is σ = 115130652. Its totient is φ = 25466496.

The previous prime is 55177607. The next prime is 55177657. The reversal of 55177616 is 61677155.

It can be written as a sum of positive squares in 2 ways, for example, as 3625216 + 51552400 = 1904^2 + 7180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55177616.

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, 132431 + ... + 132846.

Almost surely, 2^55177616 is an apocalyptic number.

It is an amenable number.

55177616 is an abundant number, since it is smaller than the sum of its proper divisors (59953036).

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

55177616 is a wasteful number, since it uses less digits than its factorization.

55177616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265298 (or 265292 counting only the distinct ones).

The product of its digits is 44100, while the sum is 38.

The square root of 55177616 is about 7428.1637030965. The cubic root of 55177616 is about 380.7041790424.

The spelling of 55177616 in words is "fifty-five million, one hundred seventy-seven thousand, six hundred sixteen".