22152551 has 2 divisors, whose sum is σ = 22152552. Its totient is φ = 22152550.

The previous prime is 22152541. The next prime is 22152563. The reversal of 22152551 is 15525122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22152551 - 2²² = 17958247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22152511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11076275 + 11076276.

It is an arithmetic number, because the mean of its divisors is an integer number (11076276).

Almost surely, 2^22152551 is an apocalyptic number.

22152551 is a deficient number, since it is larger than the sum of its proper divisors (1).

22152551 is an equidigital number, since it uses as much as digits as its factorization.

22152551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1000, while the sum is 23.

The square root of 22152551 is about 4706.6496576652. The cubic root of 22152551 is about 280.8500992514.

Adding to 22152551 its reverse (15525122), we get a palindrome (37677673).

The spelling of 22152551 in words is "twenty-two million, one hundred fifty-two thousand, five hundred fifty-one".