56772278 has 16 divisors (see below), whose sum is σ = 87210000. Its totient is φ = 27709152.

The previous prime is 56772251. The next prime is 56772281. The reversal of 56772278 is 87227765.

It is a happy number.

56772278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15968 + ... + 19196.

It is an arithmetic number, because the mean of its divisors is an integer number (5450625).

Almost surely, 2^56772278 is an apocalyptic number.

56772278 is a deficient number, since it is larger than the sum of its proper divisors (30437722).

56772278 is a wasteful number, since it uses less digits than its factorization.

56772278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439.

The product of its digits is 329280, while the sum is 44.

The square root of 56772278 is about 7534.7380843663. The cubic root of 56772278 is about 384.3369212768.

The spelling of 56772278 in words is "fifty-six million, seven hundred seventy-two thousand, two hundred seventy-eight".