55772706 has 16 divisors (see below), whose sum is σ = 121686048. Its totient is φ = 16900800.

The previous prime is 55772687. The next prime is 55772711. The reversal of 55772706 is 60727755.

It is a super-2 number, since 2×55772706² = 6221189469124872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422455 + ... + 422586.

It is an arithmetic number, because the mean of its divisors is an integer number (7605378).

Almost surely, 2^55772706 is an apocalyptic number.

55772706 is an abundant number, since it is smaller than the sum of its proper divisors (65913342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55772706 is a wasteful number, since it uses less digits than its factorization.

55772706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845057.

The product of its (nonzero) digits is 102900, while the sum is 39.

The square root of 55772706 is about 7468.1126129699. The cubic root of 55772706 is about 382.0679182618.

The spelling of 55772706 in words is "fifty-five million, seven hundred seventy-two thousand, seven hundred six".