13537474 has 12 divisors (see below), whose sum is σ = 21534822. Its totient is φ = 6360480.

The previous prime is 13537463. The next prime is 13537487. The reversal of 13537474 is 47473531.

It can be written as a sum of positive squares in only one way, i.e., 9954025 + 3583449 = 3155^2 + 1893^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21139 + ... + 21769.

Almost surely, 2^13537474 is an apocalyptic number.

13537474 is a deficient number, since it is larger than the sum of its proper divisors (7997348).

13537474 is an frugal number, since it uses more digits than its factorization.

13537474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281 (or 650 counting only the distinct ones).

The product of its digits is 35280, while the sum is 34.

The square root of 13537474 is about 3679.3306456474. The cubic root of 13537474 is about 238.3302737584.

Multiplying 13537474 by its sum of digits (34), we get a square (460274116 = 21454²).

13537474 divided by its sum of digits (34) gives a square (398161 = 631²).

The spelling of 13537474 in words is "thirteen million, five hundred thirty-seven thousand, four hundred seventy-four".