129515051 has 2 divisors, whose sum is σ = 129515052. Its totient is φ = 129515050.

The previous prime is 129515041. The next prime is 129515081. The reversal of 129515051 is 150515921.

It is a weak prime.

It is an emirp because it is prime and its reverse (150515921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129515051 - 2²⁶ = 62406187 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129515021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64757525 + 64757526.

It is an arithmetic number, because the mean of its divisors is an integer number (64757526).

Almost surely, 2^129515051 is an apocalyptic number.

129515051 is the 5090-th centered decagonal number.

129515051 is a deficient number, since it is larger than the sum of its proper divisors (1).

129515051 is an equidigital number, since it uses as much as digits as its factorization.

129515051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 29.

The square root of 129515051 is about 11380.4679605014. The cubic root of 129515051 is about 505.9490059376.

The spelling of 129515051 in words is "one hundred twenty-nine million, five hundred fifteen thousand, fifty-one".