23280553 has 2 divisors, whose sum is σ = 23280554. Its totient is φ = 23280552.

The previous prime is 23280541. The next prime is 23280559. The reversal of 23280553 is 35508232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21409129 + 1871424 = 4627^2 + 1368^2 .

It is a cyclic number.

It is not a de Polignac number, because 23280553 - 2⁹ = 23280041 is a prime.

It is not a weakly prime, because it can be changed into another prime (23280559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11640276 + 11640277.

It is an arithmetic number, because the mean of its divisors is an integer number (11640277).

Almost surely, 2^23280553 is an apocalyptic number.

It is an amenable number.

23280553 is a deficient number, since it is larger than the sum of its proper divisors (1).

23280553 is an equidigital number, since it uses as much as digits as its factorization.

23280553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 23280553 is about 4824.9925388543. The cubic root of 23280553 is about 285.5383402329.

Adding to 23280553 its reverse (35508232), we get a palindrome (58788785).

The spelling of 23280553 in words is "twenty-three million, two hundred eighty thousand, five hundred fifty-three".