22545631 has 8 divisors (see below), whose sum is σ = 23151744. Its totient is φ = 21943320.

The previous prime is 22545629. The next prime is 22545641. The reversal of 22545631 is 13654522.

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 22545631 - 2¹ = 22545629 is a prime.

It is a super-2 number, since 2×22545631² = 1016610954376322, which contains 22 as substring.

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 22545631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22545641) 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, 14166 + ... + 15676.

It is an arithmetic number, because the mean of its divisors is an integer number (2893968).

Almost surely, 2^22545631 is an apocalyptic number.

22545631 is a deficient number, since it is larger than the sum of its proper divisors (606113).

22545631 is a wasteful number, since it uses less digits than its factorization.

22545631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901.

The product of its digits is 7200, while the sum is 28.

The square root of 22545631 is about 4748.2239837649. The cubic root of 22545631 is about 282.5015260836.

The spelling of 22545631 in words is "twenty-two million, five hundred forty-five thousand, six hundred thirty-one".