56549977 has 16 divisors (see below), whose sum is σ = 63763200. Its totient is φ = 49709440.

The previous prime is 56549957. The next prime is 56549981. The reversal of 56549977 is 77994565.

It is a happy number.

It is not a de Polignac number, because 56549977 - 2⁷ = 56549849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56549917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45399 + ... + 46627.

It is an arithmetic number, because the mean of its divisors is an integer number (3985200).

Almost surely, 2^56549977 is an apocalyptic number.

It is an amenable number.

56549977 is a deficient number, since it is larger than the sum of its proper divisors (7213223).

56549977 is a wasteful number, since it uses less digits than its factorization.

56549977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376.

The product of its digits is 2381400, while the sum is 52.

The square root of 56549977 is about 7519.9718749474. The cubic root of 56549977 is about 383.8346207162.

The spelling of 56549977 in words is "fifty-six million, five hundred forty-nine thousand, nine hundred seventy-seven".