12515151 has 24 divisors (see below), whose sum is σ = 19152000. Its totient is φ = 7250320.

The previous prime is 12515123. The next prime is 12515159. The reversal of 12515151 is 15151521.

It is not a de Polignac number, because 12515151 - 2⁷ = 12515023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7600 + ... + 9098.

It is an arithmetic number, because the mean of its divisors is an integer number (798000).

Almost surely, 2^12515151 is an apocalyptic number.

12515151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12515151 is a deficient number, since it is larger than the sum of its proper divisors (6636849).

12515151 is a wasteful number, since it uses less digits than its factorization.

12515151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1536 counting only the distinct ones).

The product of its digits is 250, while the sum is 21.

The square root of 12515151 is about 3537.6759320209. The cubic root of 12515151 is about 232.1731701053.

Adding to 12515151 its reverse (15151521), we get a palindrome (27666672).

It can be divided in two parts, 1 and 2515151, that added together give a palindrome (2515152).

The spelling of 12515151 in words is "twelve million, five hundred fifteen thousand, one hundred fifty-one".