253434557 has 2 divisors, whose sum is σ = 253434558. Its totient is φ = 253434556.

The previous prime is 253434551. The next prime is 253434617. The reversal of 253434557 is 755434352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150087001 + 103347556 = 12251^2 + 10166^2 .

It is a cyclic number.

It is not a de Polignac number, because 253434557 - 2⁸ = 253434301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253434557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253434551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126717278 + 126717279.

It is an arithmetic number, because the mean of its divisors is an integer number (126717279).

Almost surely, 2^253434557 is an apocalyptic number.

It is an amenable number.

253434557 is a deficient number, since it is larger than the sum of its proper divisors (1).

253434557 is an equidigital number, since it uses as much as digits as its factorization.

253434557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 38.

The square root of 253434557 is about 15919.6280421372. The cubic root of 253434557 is about 632.8322610751.

The spelling of 253434557 in words is "two hundred fifty-three million, four hundred thirty-four thousand, five hundred fifty-seven".