102929581 has 2 divisors, whose sum is σ = 102929582. Its totient is φ = 102929580.

The previous prime is 102929549. The next prime is 102929609. The reversal of 102929581 is 185929201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101808100 + 1121481 = 10090^2 + 1059^2 .

It is a cyclic number.

It is not a de Polignac number, because 102929581 - 2⁵ = 102929549 is a prime.

It is a super-2 number, since 2×102929581² = 21188997289671122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102929581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102927581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51464790 + 51464791.

It is an arithmetic number, because the mean of its divisors is an integer number (51464791).

Almost surely, 2^102929581 is an apocalyptic number.

It is an amenable number.

102929581 is a deficient number, since it is larger than the sum of its proper divisors (1).

102929581 is an equidigital number, since it uses as much as digits as its factorization.

102929581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 102929581 is about 10145.4216767959. The cubic root of 102929581 is about 468.6479643746.

The spelling of 102929581 in words is "one hundred two million, nine hundred twenty-nine thousand, five hundred eighty-one".