252521053 has 4 divisors (see below), whose sum is σ = 252646108. Its totient is φ = 252396000.

The previous prime is 252521047. The next prime is 252521081. The reversal of 252521053 is 350125252.

It is a happy number.

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 91814724 + 160706329 = 9582^2 + 12677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252521053 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 (252521023) 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, 59448 + ... + 63553.

It is an arithmetic number, because the mean of its divisors is an integer number (63161527).

Almost surely, 2^252521053 is an apocalyptic number.

It is an amenable number.

252521053 is a deficient number, since it is larger than the sum of its proper divisors (125055).

252521053 is a wasteful number, since it uses less digits than its factorization.

252521053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125054.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 252521053 is about 15890.9110185666. The cubic root of 252521053 is about 632.0709984397.

The spelling of 252521053 in words is "two hundred fifty-two million, five hundred twenty-one thousand, fifty-three".