22701561 has 8 divisors (see below), whose sum is σ = 31861920. Its totient is φ = 14337792.

The previous prime is 22701557. The next prime is 22701593. The reversal of 22701561 is 16510722.

22701561 = 276² + 277² + ... + 446².

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

It is not a de Polignac number, because 22701561 - 2² = 22701557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22701521) 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, 199080 + ... + 199193.

It is an arithmetic number, because the mean of its divisors is an integer number (3982740).

Almost surely, 2^22701561 is an apocalyptic number.

It is an amenable number.

22701561 is a deficient number, since it is larger than the sum of its proper divisors (9160359).

22701561 is a wasteful number, since it uses less digits than its factorization.

22701561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398295.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 22701561 is about 4764.6155143936. The cubic root of 22701561 is about 283.1513089987.

The spelling of 22701561 in words is "twenty-two million, seven hundred one thousand, five hundred sixty-one".