130405251 has 32 divisors (see below), whose sum is σ = 184877056. Its totient is φ = 81648000.

The previous prime is 130405243. The next prime is 130405267. The reversal of 130405251 is 152504031.

It is not a de Polignac number, because 130405251 - 2³ = 130405243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130405211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 720381 + ... + 720561.

It is an arithmetic number, because the mean of its divisors is an integer number (5777408).

Almost surely, 2^130405251 is an apocalyptic number.

130405251 is a deficient number, since it is larger than the sum of its proper divisors (54471805).

130405251 is a wasteful number, since it uses less digits than its factorization.

130405251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 130405251 is about 11419.5118547160. The cubic root of 130405251 is about 507.1055454474.

Adding to 130405251 its reverse (152504031), we get a palindrome (282909282).

The spelling of 130405251 in words is "one hundred thirty million, four hundred five thousand, two hundred fifty-one".