102555631 has 2 divisors, whose sum is σ = 102555632. Its totient is φ = 102555630.

The previous prime is 102555619. The next prime is 102555647. The reversal of 102555631 is 136555201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102555631 - 2²³ = 94167023 is a prime.

It is a super-2 number, since 2×102555631² = 21035314899616322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102555631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102555931) 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 as a sum of consecutive naturals, namely, 51277815 + 51277816.

It is an arithmetic number, because the mean of its divisors is an integer number (51277816).

Almost surely, 2^102555631 is an apocalyptic number.

102555631 is a deficient number, since it is larger than the sum of its proper divisors (1).

102555631 is an equidigital number, since it uses as much as digits as its factorization.

102555631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 102555631 is about 10126.9754122344. The cubic root of 102555631 is about 468.0797326227.

The spelling of 102555631 in words is "one hundred two million, five hundred fifty-five thousand, six hundred thirty-one".