253272521 has 2 divisors, whose sum is σ = 253272522. Its totient is φ = 253272520.

The previous prime is 253272493. The next prime is 253272533. The reversal of 253272521 is 125272352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 249798025 + 3474496 = 15805^2 + 1864^2 .

It is a cyclic number.

It is not a de Polignac number, because 253272521 - 2¹⁰ = 253271497 is a prime.

It is not a weakly prime, because it can be changed into another prime (253272541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126636260 + 126636261.

It is an arithmetic number, because the mean of its divisors is an integer number (126636261).

Almost surely, 2^253272521 is an apocalyptic number.

It is an amenable number.

253272521 is a deficient number, since it is larger than the sum of its proper divisors (1).

253272521 is an equidigital number, since it uses as much as digits as its factorization.

253272521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 29.

The square root of 253272521 is about 15914.5380391641. The cubic root of 253272521 is about 632.6973630421.

The spelling of 253272521 in words is "two hundred fifty-three million, two hundred seventy-two thousand, five hundred twenty-one".