253800557 has 2 divisors, whose sum is σ = 253800558. Its totient is φ = 253800556.

The previous prime is 253800541. The next prime is 253800559. The reversal of 253800557 is 755008352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220403716 + 33396841 = 14846^2 + 5779^2 .

It is a cyclic number.

It is not a de Polignac number, because 253800557 - 2⁴ = 253800541 is a prime.

Together with 253800559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253800559) 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, 126900278 + 126900279.

It is an arithmetic number, because the mean of its divisors is an integer number (126900279).

Almost surely, 2^253800557 is an apocalyptic number.

It is an amenable number.

253800557 is a deficient number, since it is larger than the sum of its proper divisors (1).

253800557 is an equidigital number, since it uses as much as digits as its factorization.

253800557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 253800557 is about 15931.1191383405. The cubic root of 253800557 is about 633.1367515158.

The spelling of 253800557 in words is "two hundred fifty-three million, eight hundred thousand, five hundred fifty-seven".