253057529 has 4 divisors (see below), whose sum is σ = 267943284. Its totient is φ = 238171776.

The previous prime is 253057517. The next prime is 253057579. The reversal of 253057529 is 925750352.

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 126607504 + 126450025 = 11252^2 + 11245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253057529 is a prime.

It is a super-2 number, since 2×253057529² = 128076225967171682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253057492 and 253057501.

It is not an unprimeable number, because it can be changed into a prime (253057579) 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 in 3 ways as a sum of consecutive naturals, for example, 7442852 + ... + 7442885.

It is an arithmetic number, because the mean of its divisors is an integer number (66985821).

Almost surely, 2^253057529 is an apocalyptic number.

It is an amenable number.

253057529 is a deficient number, since it is larger than the sum of its proper divisors (14885755).

253057529 is a wasteful number, since it uses less digits than its factorization.

253057529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14885754.

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 253057529 is about 15907.7820264171. The cubic root of 253057529 is about 632.5182892950.

The spelling of 253057529 in words is "two hundred fifty-three million, fifty-seven thousand, five hundred twenty-nine".