15201601 has 4 divisors (see below), whose sum is σ = 15213312. Its totient is φ = 15189892.

The previous prime is 15201583. The next prime is 15201607. The reversal of 15201601 is 10610251.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 15201601 - 2⁵ = 15201569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15201607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3625 + ... + 6598.

It is an arithmetic number, because the mean of its divisors is an integer number (3803328).

Almost surely, 2^15201601 is an apocalyptic number.

It is an amenable number.

15201601 is a deficient number, since it is larger than the sum of its proper divisors (11711).

15201601 is a wasteful number, since it uses less digits than its factorization.

15201601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11710.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 15201601 is about 3898.9230564349. The cubic root of 15201601 is about 247.7211627185.

Adding to 15201601 its reverse (10610251), we get a palindrome (25811852).

The spelling of 15201601 in words is "fifteen million, two hundred one thousand, six hundred one".