22037561 has 8 divisors (see below), whose sum is σ = 27123264. Its totient is φ = 17436240.

The previous prime is 22037537. The next prime is 22037567. The reversal of 22037561 is 16573022.

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 22037561 - 2¹⁴ = 22021177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22037561.

It is not an unprimeable number, because it can be changed into a prime (22037567) 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, 120995 + ... + 121176.

It is an arithmetic number, because the mean of its divisors is an integer number (3390408).

Almost surely, 2^22037561 is an apocalyptic number.

It is an amenable number.

22037561 is a deficient number, since it is larger than the sum of its proper divisors (5085703).

22037561 is a wasteful number, since it uses less digits than its factorization.

22037561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242191.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 22037561 is about 4694.4180683020. The cubic root of 22037561 is about 280.3633081551.

The spelling of 22037561 in words is "twenty-two million, thirty-seven thousand, five hundred sixty-one".