13574981 has 4 divisors (see below), whose sum is σ = 15514272. Its totient is φ = 11635692.

The previous prime is 13574947. The next prime is 13574989. The reversal of 13574981 is 18947531.

13574981 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 13574981 - 2⁶ = 13574917 is a prime.

It is a super-2 number, since 2×13574981² = 368560218300722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13574989) 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, 969635 + ... + 969648.

It is an arithmetic number, because the mean of its divisors is an integer number (3878568).

Almost surely, 2^13574981 is an apocalyptic number.

It is an amenable number.

13574981 is a deficient number, since it is larger than the sum of its proper divisors (1939291).

13574981 is an equidigital number, since it uses as much as digits as its factorization.

13574981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939290.

The product of its digits is 30240, while the sum is 38.

The square root of 13574981 is about 3684.4241069671. The cubic root of 13574981 is about 238.5501771843.

The spelling of 13574981 in words is "thirteen million, five hundred seventy-four thousand, nine hundred eighty-one".