15397601 has 2 divisors, whose sum is σ = 15397602. Its totient is φ = 15397600.

The previous prime is 15397589. The next prime is 15397639. The reversal of 15397601 is 10679351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15171025 + 226576 = 3895^2 + 476^2 .

It is a cyclic number.

It is not a de Polignac number, because 15397601 - 2⁶ = 15397537 is a prime.

It is a super-2 number, since 2×15397601² = 474172233110402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15397651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7698800 + 7698801.

It is an arithmetic number, because the mean of its divisors is an integer number (7698801).

Almost surely, 2^15397601 is an apocalyptic number.

It is an amenable number.

15397601 is a deficient number, since it is larger than the sum of its proper divisors (1).

15397601 is an equidigital number, since it uses as much as digits as its factorization.

15397601 is an evil number, because the sum of its binary digits is even.

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

The square root of 15397601 is about 3923.9777012618. The cubic root of 15397601 is about 248.7812738135.

The spelling of 15397601 in words is "fifteen million, three hundred ninety-seven thousand, six hundred one".