252156542 has 16 divisors (see below), whose sum is σ = 425931264. Its totient is φ = 110919000.

The previous prime is 252156533. The next prime is 252156587. The reversal of 252156542 is 245651252.

It is a junction number, because it is equal to n+sod(n) for n = 252156499 and 252156508.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 184184 + ... + 185547.

It is an arithmetic number, because the mean of its divisors is an integer number (26620704).

Almost surely, 2^252156542 is an apocalyptic number.

252156542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

252156542 is a deficient number, since it is larger than the sum of its proper divisors (173774722).

252156542 is a wasteful number, since it uses less digits than its factorization.

252156542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369775.

The product of its digits is 24000, while the sum is 32.

The square root of 252156542 is about 15879.4377104481. The cubic root of 252156542 is about 631.7667231113.

The spelling of 252156542 in words is "two hundred fifty-two million, one hundred fifty-six thousand, five hundred forty-two".