253472761 has 2 divisors, whose sum is σ = 253472762. Its totient is φ = 253472760.

The previous prime is 253472759. The next prime is 253472777. The reversal of 253472761 is 167274352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248251536 + 5221225 = 15756^2 + 2285^2 .

It is a cyclic number.

It is not a de Polignac number, because 253472761 - 2¹ = 253472759 is a prime.

Together with 253472759, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253472761.

It is not a weakly prime, because it can be changed into another prime (253472741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126736380 + 126736381.

It is an arithmetic number, because the mean of its divisors is an integer number (126736381).

Almost surely, 2^253472761 is an apocalyptic number.

It is an amenable number.

253472761 is a deficient number, since it is larger than the sum of its proper divisors (1).

253472761 is an equidigital number, since it uses as much as digits as its factorization.

253472761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 37.

The square root of 253472761 is about 15920.8278993273. The cubic root of 253472761 is about 632.8640582502.

The spelling of 253472761 in words is "two hundred fifty-three million, four hundred seventy-two thousand, seven hundred sixty-one".