13457491 has 8 divisors (see below), whose sum is σ = 14222480. Its totient is φ = 12698208.

The previous prime is 13457473. The next prime is 13457501. The reversal of 13457491 is 19475431.

13457491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13457491 - 2¹¹ = 13455443 is a prime.

It is a super-2 number, since 2×13457491² = 362208128030162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13457401) 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, 3985 + ... + 6541.

It is an arithmetic number, because the mean of its divisors is an integer number (1777810).

Almost surely, 2^13457491 is an apocalyptic number.

13457491 is a deficient number, since it is larger than the sum of its proper divisors (764989).

13457491 is a wasteful number, since it uses less digits than its factorization.

13457491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853.

The product of its digits is 15120, while the sum is 34.

The square root of 13457491 is about 3668.4453110275. The cubic root of 13457491 is about 237.8599734190.

It can be divided in two parts, 1345 and 7491, that added together give a square (8836 = 94²).

The spelling of 13457491 in words is "thirteen million, four hundred fifty-seven thousand, four hundred ninety-one".