52555631 has 2 divisors, whose sum is σ = 52555632. Its totient is φ = 52555630.

The previous prime is 52555609. The next prime is 52555639. The reversal of 52555631 is 13655525.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52555631 is a prime.

It is a super-2 number, since 2×52555631² = 5524188699616322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52555639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26277815 + 26277816.

It is an arithmetic number, because the mean of its divisors is an integer number (26277816).

Almost surely, 2^52555631 is an apocalyptic number.

52555631 is a deficient number, since it is larger than the sum of its proper divisors (1).

52555631 is an equidigital number, since it uses as much as digits as its factorization.

52555631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22500, while the sum is 32.

The square root of 52555631 is about 7249.5262603842. The cubic root of 52555631 is about 374.5758309143.

The spelling of 52555631 in words is "fifty-two million, five hundred fifty-five thousand, six hundred thirty-one".