15451232201 has 4 divisors (see below), whose sum is σ = 15455770752. Its totient is φ = 15446693652.

The previous prime is 15451232179. The next prime is 15451232249. The reversal of 15451232201 is 10223215451.

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 15451232201 - 2²² = 15447037897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15451232101) 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, 2264165 + ... + 2270978.

It is an arithmetic number, because the mean of its divisors is an integer number (3863942688).

Almost surely, 2^15451232201 is an apocalyptic number.

It is an amenable number.

15451232201 is a deficient number, since it is larger than the sum of its proper divisors (4538551).

15451232201 is an equidigital number, since it uses as much as digits as its factorization.

15451232201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4538550.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 15451232201 its reverse (10223215451), we get a palindrome (25674447652).

The spelling of 15451232201 in words is "fifteen billion, four hundred fifty-one million, two hundred thirty-two thousand, two hundred one".