22152554 has 8 divisors (see below), whose sum is σ = 33267108. Its totient is φ = 11063520.

The previous prime is 22152551. The next prime is 22152563. The reversal of 22152554 is 45525122.

It can be written as a sum of positive squares in 2 ways, for example, as 17430625 + 4721929 = 4175^2 + 2173^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22152551) 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, 4037 + ... + 7784.

Almost surely, 2^22152554 is an apocalyptic number.

22152554 is a deficient number, since it is larger than the sum of its proper divisors (11114554).

22152554 is a wasteful number, since it uses less digits than its factorization.

22152554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12760.

The product of its digits is 4000, while the sum is 26.

The square root of 22152554 is about 4706.6499763632. The cubic root of 22152554 is about 280.8501119294.

Adding to 22152554 its reverse (45525122), we get a palindrome (67677676).

The spelling of 22152554 in words is "twenty-two million, one hundred fifty-two thousand, five hundred fifty-four".