22554457 has 2 divisors, whose sum is σ = 22554458. Its totient is φ = 22554456.

The previous prime is 22554449. The next prime is 22554479. The reversal of 22554457 is 75445522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11723776 + 10830681 = 3424^2 + 3291^2 .

It is a cyclic number.

It is not a de Polignac number, because 22554457 - 2³ = 22554449 is a prime.

It is not a weakly prime, because it can be changed into another prime (22554157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11277228 + 11277229.

It is an arithmetic number, because the mean of its divisors is an integer number (11277229).

Almost surely, 2^22554457 is an apocalyptic number.

It is an amenable number.

22554457 is a deficient number, since it is larger than the sum of its proper divisors (1).

22554457 is an equidigital number, since it uses as much as digits as its factorization.

22554457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56000, while the sum is 34.

The square root of 22554457 is about 4749.1532929565. The cubic root of 22554457 is about 282.5383851566.

Adding to 22554457 its reverse (75445522), we get a palindrome (97999979).

The spelling of 22554457 in words is "twenty-two million, five hundred fifty-four thousand, four hundred fifty-seven".