252542787 has 16 divisors (see below), whose sum is σ = 385059840. Its totient is φ = 144222912.

The previous prime is 252542779. The next prime is 252542809. The reversal of 252542787 is 787245252.

It is not a de Polignac number, because 252542787 - 2³ = 252542779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252542707) 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 15 ways as a sum of consecutive naturals, for example, 51039 + ... + 55767.

It is an arithmetic number, because the mean of its divisors is an integer number (24066240).

Almost surely, 2^252542787 is an apocalyptic number.

252542787 is a deficient number, since it is larger than the sum of its proper divisors (132517053).

252542787 is a wasteful number, since it uses less digits than its factorization.

252542787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7282.

The product of its digits is 313600, while the sum is 42.

The square root of 252542787 is about 15891.5948538842. The cubic root of 252542787 is about 632.0891316301.

The spelling of 252542787 in words is "two hundred fifty-two million, five hundred forty-two thousand, seven hundred eighty-seven".