55774727 has 4 divisors (see below), whose sum is σ = 55887000. Its totient is φ = 55662456.

The previous prime is 55774661. The next prime is 55774751. The reversal of 55774727 is 72747755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55774727 - 2²⁰ = 54726151 is a prime.

It is a super-2 number, since 2×55774727² = 6221640343849058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55774757) 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, 55388 + ... + 56385.

It is an arithmetic number, because the mean of its divisors is an integer number (13971750).

Almost surely, 2^55774727 is an apocalyptic number.

55774727 is a deficient number, since it is larger than the sum of its proper divisors (112273).

55774727 is a wasteful number, since it uses less digits than its factorization.

55774727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112272.

The product of its digits is 480200, while the sum is 44.

The square root of 55774727 is about 7468.2479203626. The cubic root of 55774727 is about 382.0725331233.

The spelling of 55774727 in words is "fifty-five million, seven hundred seventy-four thousand, seven hundred twenty-seven".