252545851 has 4 divisors (see below), whose sum is σ = 252684432. Its totient is φ = 252407272.

The previous prime is 252545849. The next prime is 252545869. The reversal of 252545851 is 158545252.

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 252545851 - 2¹ = 252545849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252545851.

It is not an unprimeable number, because it can be changed into a prime (252545801) 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, 66520 + ... + 70213.

It is an arithmetic number, because the mean of its divisors is an integer number (63171108).

Almost surely, 2^252545851 is an apocalyptic number.

252545851 is a deficient number, since it is larger than the sum of its proper divisors (138581).

252545851 is a wasteful number, since it uses less digits than its factorization.

252545851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138580.

The product of its digits is 80000, while the sum is 37.

The square root of 252545851 is about 15891.6912567543. The cubic root of 252545851 is about 632.0916879141.

The spelling of 252545851 in words is "two hundred fifty-two million, five hundred forty-five thousand, eight hundred fifty-one".