22531534 has 4 divisors (see below), whose sum is σ = 33797304. Its totient is φ = 11265766.

The previous prime is 22531493. The next prime is 22531543. The reversal of 22531534 is 43513522.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 22531499 and 22531508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5632882 + ... + 5632885.

It is an arithmetic number, because the mean of its divisors is an integer number (8449326).

Almost surely, 2^22531534 is an apocalyptic number.

22531534 is a deficient number, since it is larger than the sum of its proper divisors (11265770).

22531534 is a wasteful number, since it uses less digits than its factorization.

22531534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11265769.

The product of its digits is 3600, while the sum is 25.

The square root of 22531534 is about 4746.7393018787. The cubic root of 22531534 is about 282.4426343435.

The spelling of 22531534 in words is "twenty-two million, five hundred thirty-one thousand, five hundred thirty-four".