15022001 has 4 divisors (see below), whose sum is σ = 15043392. Its totient is φ = 15000612.

The previous prime is 15021997. The next prime is 15022009. The reversal of 15022001 is 10022051.

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 an emirpimes, since its reverse is a distinct semiprime: 10022051 = 13 ⋅770927.

It is a cyclic number.

It is not a de Polignac number, because 15022001 - 2² = 15021997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15022009) 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, 9605 + ... + 11058.

It is an arithmetic number, because the mean of its divisors is an integer number (3760848).

Almost surely, 2^15022001 is an apocalyptic number.

It is an amenable number.

15022001 is a deficient number, since it is larger than the sum of its proper divisors (21391).

15022001 is an equidigital number, since it uses as much as digits as its factorization.

15022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21390.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 15022001 is about 3875.8226223603. The cubic root of 15022001 is about 246.7417243787.

Adding to 15022001 its reverse (10022051), we get a palindrome (25044052).

The spelling of 15022001 in words is "fifteen million, twenty-two thousand, one".