523390253 has 2 divisors, whose sum is σ = 523390254. Its totient is φ = 523390252.

The previous prime is 523390201. The next prime is 523390291. The reversal of 523390253 is 352093325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 523357129 + 33124 = 22877^2 + 182^2 .

It is a cyclic number.

It is not a de Polignac number, because 523390253 - 2¹⁴ = 523373869 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523393253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261695126 + 261695127.

It is an arithmetic number, because the mean of its divisors is an integer number (261695127).

Almost surely, 2^523390253 is an apocalyptic number.

It is an amenable number.

523390253 is a deficient number, since it is larger than the sum of its proper divisors (1).

523390253 is an equidigital number, since it uses as much as digits as its factorization.

523390253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 32.

The square root of 523390253 is about 22877.7239471063. The cubic root of 523390253 is about 805.8889671506. Note that the first 3 decimals are identical.

The spelling of 523390253 in words is "five hundred twenty-three million, three hundred ninety thousand, two hundred fifty-three".