130505477 has 4 divisors (see below), whose sum is σ = 130608480. Its totient is φ = 130402476.

The previous prime is 130505467. The next prime is 130505489. The reversal of 130505477 is 774505031.

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: 774505031 = 773 ⋅1001947.

It is a cyclic number.

It is not a de Polignac number, because 130505477 - 2¹² = 130501381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130505407) 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, 49577 + ... + 52142.

It is an arithmetic number, because the mean of its divisors is an integer number (32652120).

Almost surely, 2^130505477 is an apocalyptic number.

It is an amenable number.

130505477 is a deficient number, since it is larger than the sum of its proper divisors (103003).

130505477 is a wasteful number, since it uses less digits than its factorization.

130505477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103002.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 130505477 is about 11423.8993780583. The cubic root of 130505477 is about 507.2354281134.

The spelling of 130505477 in words is "one hundred thirty million, five hundred five thousand, four hundred seventy-seven".