55357577 has 4 divisors (see below), whose sum is σ = 60390096. Its totient is φ = 50325060.

The previous prime is 55357553. The next prime is 55357633. The reversal of 55357577 is 77575355.

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 a de Polignac number, because none of the positive numbers 2^k-55357577 is a prime.

It is a super-2 number, since 2×55357577² = 6128922662621858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55351577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2516243 + ... + 2516264.

It is an arithmetic number, because the mean of its divisors is an integer number (15097524).

Almost surely, 2^55357577 is an apocalyptic number.

It is an amenable number.

55357577 is a deficient number, since it is larger than the sum of its proper divisors (5032519).

55357577 is a wasteful number, since it uses less digits than its factorization.

55357577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5032518.

The product of its digits is 643125, while the sum is 44.

The square root of 55357577 is about 7440.2672667049. The cubic root of 55357577 is about 381.1176169596.

The spelling of 55357577 in words is "fifty-five million, three hundred fifty-seven thousand, five hundred seventy-seven".