22563487 has 8 divisors (see below), whose sum is σ = 22829040. Its totient is φ = 22299840.

The previous prime is 22563481. The next prime is 22563491. The reversal of 22563487 is 78436522.

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 22563487 - 2²³ = 14174879 is a prime.

It is a super-2 number, since 2×22563487² = 1018221891198338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22563481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41437 + ... + 41977.

It is an arithmetic number, because the mean of its divisors is an integer number (2853630).

Almost surely, 2^22563487 is an apocalyptic number.

22563487 is a deficient number, since it is larger than the sum of its proper divisors (265553).

22563487 is a wasteful number, since it uses less digits than its factorization.

22563487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953.

The product of its digits is 80640, while the sum is 37.

The square root of 22563487 is about 4750.1038936006. The cubic root of 22563487 is about 282.5760862225.

The spelling of 22563487 in words is "twenty-two million, five hundred sixty-three thousand, four hundred eighty-seven".