22547501 has 2 divisors, whose sum is σ = 22547502. Its totient is φ = 22547500.

The previous prime is 22547489. The next prime is 22547507. The reversal of 22547501 is 10574522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18748900 + 3798601 = 4330^2 + 1949^2 .

It is a cyclic number.

It is not a de Polignac number, because 22547501 - 2¹⁰ = 22546477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22547507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11273750 + 11273751.

It is an arithmetic number, because the mean of its divisors is an integer number (11273751).

Almost surely, 2^22547501 is an apocalyptic number.

It is an amenable number.

22547501 is a deficient number, since it is larger than the sum of its proper divisors (1).

22547501 is an equidigital number, since it uses as much as digits as its factorization.

22547501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 22547501 is about 4748.4208954135. The cubic root of 22547501 is about 282.5093363662.

The spelling of 22547501 in words is "twenty-two million, five hundred forty-seven thousand, five hundred one".