13515151 has 8 divisors (see below), whose sum is σ = 14584304. Its totient is φ = 12450240.

The previous prime is 13515133. The next prime is 13515157. The reversal of 13515151 is 15151531.

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 13515151 - 2¹⁵ = 13482383 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13515157) 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, 9571 + ... + 10891.

It is an arithmetic number, because the mean of its divisors is an integer number (1823038).

Almost surely, 2^13515151 is an apocalyptic number.

13515151 is a deficient number, since it is larger than the sum of its proper divisors (1069153).

13515151 is a wasteful number, since it uses less digits than its factorization.

13515151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121.

The product of its digits is 375, while the sum is 22.

The square root of 13515151 is about 3676.2958259640. The cubic root of 13515151 is about 238.1992012086.

Adding to 13515151 its reverse (15151531), we get a palindrome (28666682).

The spelling of 13515151 in words is "thirteen million, five hundred fifteen thousand, one hundred fifty-one".