15397061 has 4 divisors (see below), whose sum is σ = 15406752. Its totient is φ = 15387372.

The previous prime is 15397037. The next prime is 15397073. The reversal of 15397061 is 16079351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15397061 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 (15397001) 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 in 3 ways as a sum of consecutive naturals, for example, 1841 + ... + 5846.

It is an arithmetic number, because the mean of its divisors is an integer number (3851688).

Almost surely, 2^15397061 is an apocalyptic number.

It is an amenable number.

15397061 is a deficient number, since it is larger than the sum of its proper divisors (9691).

15397061 is an equidigital number, since it uses as much as digits as its factorization.

15397061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9690.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 15397061 is about 3923.9088929281. The cubic root of 15397061 is about 248.7783654934.

The spelling of 15397061 in words is "fifteen million, three hundred ninety-seven thousand, sixty-one".