15422561 has 8 divisors (see below), whose sum is σ = 19228224. Its totient is φ = 12017520.

The previous prime is 15422557. The next prime is 15422567. The reversal of 15422561 is 16522451.

15422561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15422561 - 2² = 15422557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15422561.

It is not an unprimeable number, because it can be changed into a prime (15422567) 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, 100070 + ... + 100223.

It is an arithmetic number, because the mean of its divisors is an integer number (2403528).

Almost surely, 2^15422561 is an apocalyptic number.

15422561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15422561 is a deficient number, since it is larger than the sum of its proper divisors (3805663).

15422561 is a wasteful number, since it uses less digits than its factorization.

15422561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200311.

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

The square root of 15422561 is about 3927.1568596123. The cubic root of 15422561 is about 248.9156286891.

The spelling of 15422561 in words is "fifteen million, four hundred twenty-two thousand, five hundred sixty-one".