55768831 has 4 divisors (see below), whose sum is σ = 55948464. Its totient is φ = 55589200.

The previous prime is 55768771. The next prime is 55768847. The reversal of 55768831 is 13886755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55768831 - 2⁹ = 55768319 is a prime.

It is a super-2 number, since 2×55768831² = 6220325022213122, 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 (55768871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89350 + ... + 89971.

It is an arithmetic number, because the mean of its divisors is an integer number (13987116).

Almost surely, 2^55768831 is an apocalyptic number.

55768831 is a deficient number, since it is larger than the sum of its proper divisors (179633).

55768831 is a wasteful number, since it uses less digits than its factorization.

55768831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179632.

The product of its digits is 201600, while the sum is 43.

The square root of 55768831 is about 7467.8531720971. The cubic root of 55768831 is about 382.0590695640.

The spelling of 55768831 in words is "fifty-five million, seven hundred sixty-eight thousand, eight hundred thirty-one".