55828831 has 2 divisors, whose sum is σ = 55828832. Its totient is φ = 55828830.

The previous prime is 55828823. The next prime is 55828837. The reversal of 55828831 is 13882855.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55828831 - 2³ = 55828823 is a prime.

It is a super-2 number, since 2×55828831² = 6233716741653122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55828837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27914415 + 27914416.

It is an arithmetic number, because the mean of its divisors is an integer number (27914416).

Almost surely, 2^55828831 is an apocalyptic number.

55828831 is a deficient number, since it is larger than the sum of its proper divisors (1).

55828831 is an equidigital number, since it uses as much as digits as its factorization.

55828831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76800, while the sum is 40.

The square root of 55828831 is about 7471.8693109556. The cubic root of 55828831 is about 382.1960357256.

The spelling of 55828831 in words is "fifty-five million, eight hundred twenty-eight thousand, eight hundred thirty-one".