22457651 has 4 divisors (see below), whose sum is σ = 22595592. Its totient is φ = 22319712.

The previous prime is 22457641. The next prime is 22457657. The reversal of 22457651 is 15675422.

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 22457651 - 2¹⁰ = 22456627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22457657) 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, 68726 + ... + 69051.

It is an arithmetic number, because the mean of its divisors is an integer number (5648898).

Almost surely, 2^22457651 is an apocalyptic number.

22457651 is a deficient number, since it is larger than the sum of its proper divisors (137941).

22457651 is a wasteful number, since it uses less digits than its factorization.

22457651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137940.

The product of its digits is 16800, while the sum is 32.

The square root of 22457651 is about 4738.9504112198. The cubic root of 22457651 is about 282.1335777142.

It can be divided in two parts, 224 and 57651, that added together give a palindrome (57875).

The spelling of 22457651 in words is "twenty-two million, four hundred fifty-seven thousand, six hundred fifty-one".