470881581 has 4 divisors (see below), whose sum is σ = 627842112. Its totient is φ = 313921052.

The previous prime is 470881577. The next prime is 470881591. The reversal of 470881581 is 185188074.

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.

It is a cyclic number.

It is not a de Polignac number, because 470881581 - 2² = 470881577 is a prime.

It is a super-2 number, since 2×470881581² = 443458926650119122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (470881501) 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, 78480261 + ... + 78480266.

It is an arithmetic number, because the mean of its divisors is an integer number (156960528).

Almost surely, 2^470881581 is an apocalyptic number.

It is an amenable number.

470881581 is a deficient number, since it is larger than the sum of its proper divisors (156960531).

470881581 is a wasteful number, since it uses less digits than its factorization.

470881581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156960530.

The product of its (nonzero) digits is 71680, while the sum is 42.

The square root of 470881581 is about 21699.8060129578. The cubic root of 470881581 is about 777.9838248874.

The spelling of 470881581 in words is "four hundred seventy million, eight hundred eighty-one thousand, five hundred eighty-one".