253490801 has 2 divisors, whose sum is σ = 253490802. Its totient is φ = 253490800.

The previous prime is 253490773. The next prime is 253490819. The reversal of 253490801 is 108094352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240994576 + 12496225 = 15524^2 + 3535^2 .

It is a cyclic number.

It is not a de Polignac number, because 253490801 - 2²² = 249296497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (253490851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126745400 + 126745401.

It is an arithmetic number, because the mean of its divisors is an integer number (126745401).

Almost surely, 2^253490801 is an apocalyptic number.

It is an amenable number.

253490801 is a deficient number, since it is larger than the sum of its proper divisors (1).

253490801 is an equidigital number, since it uses as much as digits as its factorization.

253490801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 253490801 is about 15921.3944426988. The cubic root of 253490801 is about 632.8790718250.

The spelling of 253490801 in words is "two hundred fifty-three million, four hundred ninety thousand, eight hundred one".