55772727 has 16 divisors (see below), whose sum is σ = 77634912. Its totient is φ = 35579520.

The previous prime is 55772711. The next prime is 55772729. The reversal of 55772727 is 72727755.

55772727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55772727 - 2⁴ = 55772711 is a prime.

It is a super-2 number, since 2×55772727² = 6221194154033058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55772729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2653 + ... + 10889.

It is an arithmetic number, because the mean of its divisors is an integer number (4852182).

Almost surely, 2^55772727 is an apocalyptic number.

55772727 is a deficient number, since it is larger than the sum of its proper divisors (21862185).

55772727 is a wasteful number, since it uses less digits than its factorization.

55772727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8338.

The product of its digits is 240100, while the sum is 42.

The square root of 55772727 is about 7468.1140189475. The cubic root of 55772727 is about 382.0679662149.

The spelling of 55772727 in words is "fifty-five million, seven hundred seventy-two thousand, seven hundred twenty-seven".