22152523 has 2 divisors, whose sum is σ = 22152524. Its totient is φ = 22152522.

The previous prime is 22152511. The next prime is 22152539. The reversal of 22152523 is 32525122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22152523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22152494 and 22152503.

It is not a weakly prime, because it can be changed into another prime (22152563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11076261 + 11076262.

It is an arithmetic number, because the mean of its divisors is an integer number (11076262).

Almost surely, 2^22152523 is an apocalyptic number.

22152523 is a deficient number, since it is larger than the sum of its proper divisors (1).

22152523 is an equidigital number, since it uses as much as digits as its factorization.

22152523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 22.

The square root of 22152523 is about 4706.6466831493. The cubic root of 22152523 is about 280.8499809233.

Adding to 22152523 its reverse (32525122), we get a palindrome (54677645).

The spelling of 22152523 in words is "twenty-two million, one hundred fifty-two thousand, five hundred twenty-three".