13570491 has 16 divisors (see below), whose sum is σ = 20113920. Its totient is φ = 8068320.

The previous prime is 13570477. The next prime is 13570493. The reversal of 13570491 is 19407531.

It is not a de Polignac number, because 13570491 - 2¹⁵ = 13537723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13570493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2131 + ... + 5628.

It is an arithmetic number, because the mean of its divisors is an integer number (1257120).

Almost surely, 2^13570491 is an apocalyptic number.

13570491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13570491 is a deficient number, since it is larger than the sum of its proper divisors (6543429).

13570491 is a wasteful number, since it uses less digits than its factorization.

13570491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7826.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 13570491 is about 3683.8147347553. The cubic root of 13570491 is about 238.5238736875.

The spelling of 13570491 in words is "thirteen million, five hundred seventy thousand, four hundred ninety-one".