55577177 has 4 divisors (see below), whose sum is σ = 57993600. Its totient is φ = 53160756.

The previous prime is 55577117. The next prime is 55577209. The reversal of 55577177 is 77177555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55577177 - 2¹⁸ = 55315033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55577117) 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, 1208177 + ... + 1208222.

It is an arithmetic number, because the mean of its divisors is an integer number (14498400).

Almost surely, 2^55577177 is an apocalyptic number.

It is an amenable number.

55577177 is a deficient number, since it is larger than the sum of its proper divisors (2416423).

55577177 is a wasteful number, since it uses less digits than its factorization.

55577177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416422.

The product of its digits is 300125, while the sum is 44.

The square root of 55577177 is about 7455.0101944934. The cubic root of 55577177 is about 381.6209085150.

The spelling of 55577177 in words is "fifty-five million, five hundred seventy-seven thousand, one hundred seventy-seven".