15344561 has 2 divisors, whose sum is σ = 15344562. Its totient is φ = 15344560.

The previous prime is 15344551. The next prime is 15344569. The reversal of 15344561 is 16544351.

It is a happy number.

15344561 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., 10764961 + 4579600 = 3281^2 + 2140^2 .

It is an emirp because it is prime and its reverse (16544351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15344561 - 2²² = 11150257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15344569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7672280 + 7672281.

It is an arithmetic number, because the mean of its divisors is an integer number (7672281).

Almost surely, 2^15344561 is an apocalyptic number.

It is an amenable number.

15344561 is a deficient number, since it is larger than the sum of its proper divisors (1).

15344561 is an equidigital number, since it uses as much as digits as its factorization.

15344561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 15344561 is about 3917.2134228301. The cubic root of 15344561 is about 248.4952868570.

The spelling of 15344561 in words is "fifteen million, three hundred forty-four thousand, five hundred sixty-one".