15134921 has 2 divisors, whose sum is σ = 15134922. Its totient is φ = 15134920.

The previous prime is 15134909. The next prime is 15134929. The reversal of 15134921 is 12943151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13957696 + 1177225 = 3736^2 + 1085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15134921 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15134929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7567460 + 7567461.

It is an arithmetic number, because the mean of its divisors is an integer number (7567461).

Almost surely, 2^15134921 is an apocalyptic number.

It is an amenable number.

15134921 is a deficient number, since it is larger than the sum of its proper divisors (1).

15134921 is an equidigital number, since it uses as much as digits as its factorization.

15134921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 26.

The square root of 15134921 is about 3890.3625795034. The cubic root of 15134921 is about 247.3584321167.

The spelling of 15134921 in words is "fifteen million, one hundred thirty-four thousand, nine hundred twenty-one".