15222961 has 8 divisors (see below), whose sum is σ = 16432640. Its totient is φ = 14018832.

The previous prime is 15222959. The next prime is 15222967. The reversal of 15222961 is 16922251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15222961 - 2¹ = 15222959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15222967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5680 + ... + 7918.

It is an arithmetic number, because the mean of its divisors is an integer number (2054080).

Almost surely, 2^15222961 is an apocalyptic number.

It is an amenable number.

15222961 is a deficient number, since it is larger than the sum of its proper divisors (1209679).

15222961 is a wasteful number, since it uses less digits than its factorization.

15222961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775.

The product of its digits is 2160, while the sum is 28.

The square root of 15222961 is about 3901.6613128256. The cubic root of 15222961 is about 247.8371340047.

The spelling of 15222961 in words is "fifteen million, two hundred twenty-two thousand, nine hundred sixty-one".