253340473 has 2 divisors, whose sum is σ = 253340474. Its totient is φ = 253340472.

The previous prime is 253340453. The next prime is 253340531. The reversal of 253340473 is 374043352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236913664 + 16426809 = 15392^2 + 4053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253340473 is a prime.

It is not a weakly prime, because it can be changed into another prime (253340453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126670236 + 126670237.

It is an arithmetic number, because the mean of its divisors is an integer number (126670237).

Almost surely, 2^253340473 is an apocalyptic number.

It is an amenable number.

253340473 is a deficient number, since it is larger than the sum of its proper divisors (1).

253340473 is an equidigital number, since it uses as much as digits as its factorization.

253340473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 31.

The square root of 253340473 is about 15916.6727993007. The cubic root of 253340473 is about 632.7539413695.

The spelling of 253340473 in words is "two hundred fifty-three million, three hundred forty thousand, four hundred seventy-three".