55788831 has 40 divisors (see below), whose sum is σ = 96865824. Its totient is φ = 31337280.

The previous prime is 55788829. The next prime is 55788833. The reversal of 55788831 is 13888755.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55788829) and next prime (55788833).

It is not a de Polignac number, because 55788831 - 2¹ = 55788829 is a prime.

It is a super-2 number, since 2×55788831² = 6224787328693122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55788833) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 33781 + ... + 35393.

Almost surely, 2^55788831 is an apocalyptic number.

55788831 is a deficient number, since it is larger than the sum of its proper divisors (41076993).

55788831 is a wasteful number, since it uses less digits than its factorization.

55788831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693 (or 1684 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 55788831 is about 7469.1921249892. The cubic root of 55788831 is about 382.1047358618.

It can be divided in two parts, 5 and 5788831, that added together give a square (5788836 = 2406²).

The spelling of 55788831 in words is "fifty-five million, seven hundred eighty-eight thousand, eight hundred thirty-one".