13121593 has 2 divisors, whose sum is σ = 13121594. Its totient is φ = 13121592.

The previous prime is 13121573. The next prime is 13121597. The reversal of 13121593 is 39512131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12938409 + 183184 = 3597^2 + 428^2 .

It is a cyclic number.

It is not a de Polignac number, because 13121593 - 2⁵ = 13121561 is a prime.

It is not a weakly prime, because it can be changed into another prime (13121597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560796 + 6560797.

It is an arithmetic number, because the mean of its divisors is an integer number (6560797).

Almost surely, 2^13121593 is an apocalyptic number.

It is an amenable number.

13121593 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121593 is an equidigital number, since it uses as much as digits as its factorization.

13121593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 25.

The square root of 13121593 is about 3622.3739453568. The cubic root of 13121593 is about 235.8642868579.

The spelling of 13121593 in words is "thirteen million, one hundred twenty-one thousand, five hundred ninety-three".