57227778 has 24 divisors (see below), whose sum is σ = 124345728. Its totient is φ = 19021752.

The previous prime is 57227761. The next prime is 57227783. The reversal of 57227778 is 87772275.

It is a happy number.

57227778 is a `hidden beast` number, since 572 + 2 + 7 + 7 + 78 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2275 + ... + 10937.

It is an arithmetic number, because the mean of its divisors is an integer number (5181072).

Almost surely, 2^57227778 is an apocalyptic number.

57227778 is an abundant number, since it is smaller than the sum of its proper divisors (67117950).

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

57227778 is a wasteful number, since it uses less digits than its factorization.

57227778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9038 (or 9035 counting only the distinct ones).

The product of its digits is 384160, while the sum is 45.

The square root of 57227778 is about 7564.9043615898. The cubic root of 57227778 is about 385.3620656475.

The spelling of 57227778 in words is "fifty-seven million, two hundred twenty-seven thousand, seven hundred seventy-eight".