130506506 has 8 divisors (see below), whose sum is σ = 210818244. Its totient is φ = 60233760.

The previous prime is 130506503. The next prime is 130506521. The reversal of 130506506 is 605605031.

It can be written as a sum of positive squares in 2 ways, for example, as 129163225 + 1343281 = 11365^2 + 1159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 5019481 = 130506506 / (1 + 3 + 0 + 5 + 0 + 6 + 5 + 0 + 6).

It is not an unprimeable number, because it can be changed into a prime (130506503) 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, 2509715 + ... + 2509766.

Almost surely, 2^130506506 is an apocalyptic number.

130506506 is a deficient number, since it is larger than the sum of its proper divisors (80311738).

130506506 is a wasteful number, since it uses less digits than its factorization.

130506506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019496.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 130506506 is about 11423.9444151309. The cubic root of 130506506 is about 507.2367612475.

The spelling of 130506506 in words is "one hundred thirty million, five hundred six thousand, five hundred six".