13440501 has 6 divisors (see below), whose sum is σ = 19414070. Its totient is φ = 8960328.

The previous prime is 13440473. The next prime is 13440529. The reversal of 13440501 is 10504431.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13440473) and next prime (13440529).

It can be written as a sum of positive squares in only one way, i.e., 11737476 + 1703025 = 3426^2 + 1305^2 .

It is not a de Polignac number, because 13440501 - 2⁶ = 13440437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440551) 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, 746686 + ... + 746703.

Almost surely, 2^13440501 is an apocalyptic number.

It is an amenable number.

13440501 is a deficient number, since it is larger than the sum of its proper divisors (5973569).

13440501 is a wasteful number, since it uses less digits than its factorization.

13440501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493395 (or 1493392 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 13440501 is about 3666.1288848048. The cubic root of 13440501 is about 237.7598323445.

Adding to 13440501 its reverse (10504431), we get a palindrome (23944932).

The spelling of 13440501 in words is "thirteen million, four hundred forty thousand, five hundred one".