22455531 has 24 divisors (see below), whose sum is σ = 37200384. Its totient is φ = 12786480.

The previous prime is 22455529. The next prime is 22455547. The reversal of 22455531 is 13555422.

It is a happy number.

It is not a de Polignac number, because 22455531 - 2¹ = 22455529 is a prime.

It is a super-2 number, since 2×22455531² = 1008501744983922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22455495 and 22455504.

It is not an unprimeable number, because it can be changed into a prime (22455551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26740 + ... + 27566.

It is an arithmetic number, because the mean of its divisors is an integer number (1550016).

Almost surely, 2^22455531 is an apocalyptic number.

22455531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22455531 is a deficient number, since it is larger than the sum of its proper divisors (14744853).

22455531 is a wasteful number, since it uses less digits than its factorization.

22455531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271 (or 1268 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 22455531 is about 4738.7267277192. The cubic root of 22455531 is about 282.1246996410.

It can be divided in two parts, 2245 and 5531, that added together give a 5-th power (7776 = 6⁵).

The spelling of 22455531 in words is "twenty-two million, four hundred fifty-five thousand, five hundred thirty-one".