22054631 has 4 divisors (see below), whose sum is σ = 23013552. Its totient is φ = 21095712.

The previous prime is 22054619. The next prime is 22054651. The reversal of 22054631 is 13645022.

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

It is a cyclic number.

It is not a de Polignac number, because 22054631 - 2⁶ = 22054567 is a prime.

It is a super-2 number, since 2×22054631² = 972813497092322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 958897 = 22054631 / (2 + 2 + 0 + 5 + 4 + 6 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22054597 and 22054606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22054601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479426 + ... + 479471.

It is an arithmetic number, because the mean of its divisors is an integer number (5753388).

Almost surely, 2^22054631 is an apocalyptic number.

22054631 is a deficient number, since it is larger than the sum of its proper divisors (958921).

22054631 is an equidigital number, since it uses as much as digits as its factorization.

22054631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958920.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 22054631 is about 4696.2358330902. The cubic root of 22054631 is about 280.4356780290.

Adding to 22054631 its reverse (13645022), we get a palindrome (35699653).

The spelling of 22054631 in words is "twenty-two million, fifty-four thousand, six hundred thirty-one".