15135749 has 2 divisors, whose sum is σ = 15135750. Its totient is φ = 15135748.

The previous prime is 15135737. The next prime is 15135751. The reversal of 15135749 is 94753151.

15135749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11175649 + 3960100 = 3343^2 + 1990^2 .

It is a cyclic number.

It is not a de Polignac number, because 15135749 - 2⁸ = 15135493 is a prime.

Together with 15135751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15135779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7567874 + 7567875.

It is an arithmetic number, because the mean of its divisors is an integer number (7567875).

Almost surely, 2^15135749 is an apocalyptic number.

It is an amenable number.

15135749 is a deficient number, since it is larger than the sum of its proper divisors (1).

15135749 is an equidigital number, since it uses as much as digits as its factorization.

15135749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 35.

The square root of 15135749 is about 3890.4689948642. The cubic root of 15135749 is about 247.3629428560.

The spelling of 15135749 in words is "fifteen million, one hundred thirty-five thousand, seven hundred forty-nine".