55797831 has 12 divisors (see below), whose sum is σ = 81233152. Its totient is φ = 36904896.

The previous prime is 55797821. The next prime is 55797869. The reversal of 55797831 is 13879755.

55797831 is a `hidden beast` number, since 5 + 579 + 78 + 3 + 1 = 666.

55797831 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 55797831 - 2¹¹ = 55795783 is a prime.

It is a super-2 number, since 2×55797831² = 6226795888609122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55797821) 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 11 ways as a sum of consecutive naturals, for example, 23266 + ... + 25551.

Almost surely, 2^55797831 is an apocalyptic number.

55797831 is a deficient number, since it is larger than the sum of its proper divisors (25435321).

55797831 is a wasteful number, since it uses less digits than its factorization.

55797831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48950 (or 48947 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 55797831 is about 7469.7945754887. The cubic root of 55797831 is about 382.1252821351.

It can be divided in two parts, 557978 and 31, that added together give a square (558009 = 747²).

The spelling of 55797831 in words is "fifty-five million, seven hundred ninety-seven thousand, eight hundred thirty-one".