22503457 has 2 divisors, whose sum is σ = 22503458. Its totient is φ = 22503456.

The previous prime is 22503433. The next prime is 22503469. The reversal of 22503457 is 75430522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17842176 + 4661281 = 4224^2 + 2159^2 .

It is a cyclic number.

It is not a de Polignac number, because 22503457 - 2¹⁹ = 21979169 is a prime.

It is not a weakly prime, because it can be changed into another prime (22503487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11251728 + 11251729.

It is an arithmetic number, because the mean of its divisors is an integer number (11251729).

Almost surely, 2^22503457 is an apocalyptic number.

It is an amenable number.

22503457 is a deficient number, since it is larger than the sum of its proper divisors (1).

22503457 is an equidigital number, since it uses as much as digits as its factorization.

22503457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 22503457 is about 4743.7808760523. The cubic root of 22503457 is about 282.3252664197.

Adding to 22503457 its reverse (75430522), we get a palindrome (97933979).

The spelling of 22503457 in words is "twenty-two million, five hundred three thousand, four hundred fifty-seven".