130151521 has 4 divisors (see below), whose sum is σ = 131415232. Its totient is φ = 128887812.

The previous prime is 130151509. The next prime is 130151543. The reversal of 130151521 is 125151031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 125151031 = 191 ⋅655241.

It is a cyclic number.

It is not a de Polignac number, because 130151521 - 2⁹ = 130151009 is a prime.

It is a super-2 number, since 2×130151521² = 33878836837226882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130151321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631701 + ... + 631906.

It is an arithmetic number, because the mean of its divisors is an integer number (32853808).

Almost surely, 2^130151521 is an apocalyptic number.

It is an amenable number.

130151521 is a deficient number, since it is larger than the sum of its proper divisors (1263711).

130151521 is a wasteful number, since it uses less digits than its factorization.

130151521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263710.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 130151521 is about 11408.3969513688. The cubic root of 130151521 is about 506.7764395020.

The spelling of 130151521 in words is "one hundred thirty million, one hundred fifty-one thousand, five hundred twenty-one".