653552257 has 2 divisors, whose sum is σ = 653552258. Its totient is φ = 653552256.

The previous prime is 653552219. The next prime is 653552279. The reversal of 653552257 is 752255356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 532640241 + 120912016 = 23079^2 + 10996^2 .

It is a cyclic number.

It is not a de Polignac number, because 653552257 - 2⁷ = 653552129 is a prime.

It is not a weakly prime, because it can be changed into another prime (653562257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326776128 + 326776129.

It is an arithmetic number, because the mean of its divisors is an integer number (326776129).

Almost surely, 2^653552257 is an apocalyptic number.

It is an amenable number.

653552257 is a deficient number, since it is larger than the sum of its proper divisors (1).

653552257 is an equidigital number, since it uses as much as digits as its factorization.

653552257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 315000, while the sum is 40.

The square root of 653552257 is about 25564.6681378812. The cubic root of 653552257 is about 867.8142414507.

The spelling of 653552257 in words is "six hundred fifty-three million, five hundred fifty-two thousand, two hundred fifty-seven".