252565751 has 4 divisors (see below), whose sum is σ = 255066504. Its totient is φ = 250065000.

The previous prime is 252565739. The next prime is 252565759. The reversal of 252565751 is 157565252.

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

It is a cyclic number.

It is not a de Polignac number, because 252565751 - 2¹⁸ = 252303607 is a prime.

It is a super-3 number, since 3×252565751³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252565759) 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, 1250225 + ... + 1250426.

It is an arithmetic number, because the mean of its divisors is an integer number (63766626).

Almost surely, 2^252565751 is an apocalyptic number.

252565751 is a deficient number, since it is larger than the sum of its proper divisors (2500753).

252565751 is a wasteful number, since it uses less digits than its factorization.

252565751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500752.

The product of its digits is 105000, while the sum is 38.

The square root of 252565751 is about 15892.3173577676. The cubic root of 252565751 is about 632.1082899082.

The spelling of 252565751 in words is "two hundred fifty-two million, five hundred sixty-five thousand, seven hundred fifty-one".