55612577 has 4 divisors (see below), whose sum is σ = 55711920. Its totient is φ = 55513236.

The previous prime is 55612567. The next prime is 55612589. The reversal of 55612577 is 77521655.

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, and also an emirpimes, since its reverse is a distinct semiprime: 77521655 = 5 ⋅15504331.

It is a cyclic number.

It is not a de Polignac number, because 55612577 - 2¹⁰ = 55611553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55612577.

It is not an unprimeable number, because it can be changed into a prime (55612507) 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, 48827 + ... + 49952.

It is an arithmetic number, because the mean of its divisors is an integer number (13927980).

Almost surely, 2^55612577 is an apocalyptic number.

It is an amenable number.

55612577 is a deficient number, since it is larger than the sum of its proper divisors (99343).

55612577 is an equidigital number, since it uses as much as digits as its factorization.

55612577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99342.

The product of its digits is 73500, while the sum is 38.

The square root of 55612577 is about 7457.3840587702. The cubic root of 55612577 is about 381.7019160654.

The spelling of 55612577 in words is "fifty-five million, six hundred twelve thousand, five hundred seventy-seven".