253002557 has 4 divisors (see below), whose sum is σ = 253102140. Its totient is φ = 252902976.

The previous prime is 253002521. The next prime is 253002601. The reversal of 253002557 is 755200352.

253002557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50395801 + 202606756 = 7099^2 + 14234^2 .

It is a cyclic number.

It is not a de Polignac number, because 253002557 - 2¹² = 252998461 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 (253302557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45878 + ... + 51095.

It is an arithmetic number, because the mean of its divisors is an integer number (63275535).

Almost surely, 2^253002557 is an apocalyptic number.

It is an amenable number.

253002557 is a deficient number, since it is larger than the sum of its proper divisors (99583).

253002557 is an equidigital number, since it uses as much as digits as its factorization.

253002557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99582.

The product of its (nonzero) digits is 10500, while the sum is 29.

The square root of 253002557 is about 15906.0540989901. The cubic root of 253002557 is about 632.4724850680.

The spelling of 253002557 in words is "two hundred fifty-three million, two thousand, five hundred fifty-seven".