55177631 has 8 divisors (see below), whose sum is σ = 58506624. Its totient is φ = 51857920.

The previous prime is 55177607. The next prime is 55177657. The reversal of 55177631 is 13677155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55177631 - 2¹⁴ = 55161247 is a prime.

It is a super-2 number, since 2×55177631² = 6089141925544322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55177591 and 55177600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55177231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12791 + ... + 16551.

It is an arithmetic number, because the mean of its divisors is an integer number (7313328).

Almost surely, 2^55177631 is an apocalyptic number.

55177631 is a deficient number, since it is larger than the sum of its proper divisors (3328993).

55177631 is a wasteful number, since it uses less digits than its factorization.

55177631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641.

The product of its digits is 22050, while the sum is 35.

The square root of 55177631 is about 7428.1647127672. The cubic root of 55177631 is about 380.7042135404.

The spelling of 55177631 in words is "fifty-five million, one hundred seventy-seven thousand, six hundred thirty-one".