55812775 has 6 divisors (see below), whose sum is σ = 69207872. Its totient is φ = 44650200.

The previous prime is 55812749. The next prime is 55812781. The reversal of 55812775 is 57721855.

It is not a de Polignac number, because 55812775 - 2¹⁵ = 55780007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1116231 + ... + 1116280.

Almost surely, 2^55812775 is an apocalyptic number.

55812775 is a deficient number, since it is larger than the sum of its proper divisors (13395097).

55812775 is a wasteful number, since it uses less digits than its factorization.

55812775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232521 (or 2232516 counting only the distinct ones).

The product of its digits is 98000, while the sum is 40.

The square root of 55812775 is about 7470.7948037675. The cubic root of 55812775 is about 382.1593932011.

The spelling of 55812775 in words is "fifty-five million, eight hundred twelve thousand, seven hundred seventy-five".