13345537 has 6 divisors (see below), whose sum is σ = 13452738. Its totient is φ = 13239072.

The previous prime is 13345513. The next prime is 13345571. The reversal of 13345537 is 73554331.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 3207681 = 3184^2 + 1791^2 .

It is not a de Polignac number, because 13345537 - 2¹¹ = 13343489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13345499 and 13345508.

It is not an unprimeable number, because it can be changed into a prime (13345237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39433 + ... + 39769.

It is an arithmetic number, because the mean of its divisors is an integer number (2242123).

Almost surely, 2^13345537 is an apocalyptic number.

It is an amenable number.

13345537 is a deficient number, since it is larger than the sum of its proper divisors (107201).

13345537 is an frugal number, since it uses more digits than its factorization.

13345537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 536 counting only the distinct ones).

The product of its digits is 18900, while the sum is 31.

The square root of 13345537 is about 3653.1543903865. The cubic root of 13345537 is about 237.1985434724.

Adding to 13345537 its reverse (73554331), we get a palindrome (86899868).

The spelling of 13345537 in words is "thirteen million, three hundred forty-five thousand, five hundred thirty-seven".