253775557 has 6 divisors (see below), whose sum is σ = 295208358. Its totient is φ = 217521864.

The previous prime is 253775539. The next prime is 253775569. The reversal of 253775557 is 755577352.

It can be written as a sum of positive squares in only one way, i.e., 184036356 + 69739201 = 13566^2 + 8351^2 .

It is not a de Polignac number, because 253775557 - 2¹⁵ = 253742789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253778557) 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 in 5 ways as a sum of consecutive naturals, for example, 2589498 + ... + 2589595.

It is an arithmetic number, because the mean of its divisors is an integer number (49201393).

Almost surely, 2^253775557 is an apocalyptic number.

It is an amenable number.

253775557 is a deficient number, since it is larger than the sum of its proper divisors (41432801).

253775557 is an equidigital number, since it uses as much as digits as its factorization.

253775557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5179107 (or 5179100 counting only the distinct ones).

The product of its digits is 1286250, while the sum is 46.

The square root of 253775557 is about 15930.3344911524. The cubic root of 253775557 is about 633.1159623067.

The spelling of 253775557 in words is "two hundred fifty-three million, seven hundred seventy-five thousand, five hundred fifty-seven".