12577481 has 8 divisors (see below), whose sum is σ = 14999424. Its totient is φ = 10311840.

The previous prime is 12577471. The next prime is 12577489. The reversal of 12577481 is 18477521.

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

It is not a de Polignac number, because 12577481 - 2¹⁰ = 12576457 is a prime.

It is a super-2 number, since 2×12577481² = 316386056610722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12577489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38900 + ... + 39221.

It is an arithmetic number, because the mean of its divisors is an integer number (1874928).

Almost surely, 2^12577481 is an apocalyptic number.

It is an amenable number.

12577481 is a deficient number, since it is larger than the sum of its proper divisors (2421943).

12577481 is an equidigital number, since it uses as much as digits as its factorization.

12577481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78151.

The product of its digits is 15680, while the sum is 35.

The square root of 12577481 is about 3546.4744465455. The cubic root of 12577481 is about 232.5579675865.

The spelling of 12577481 in words is "twelve million, five hundred seventy-seven thousand, four hundred eighty-one".