252143535 has 16 divisors (see below), whose sum is σ = 461062656. Its totient is φ = 115265568.

The previous prime is 252143531. The next prime is 252143539. The reversal of 252143535 is 535341252.

It is an interprime number because it is at equal distance from previous prime (252143531) and next prime (252143539).

It is not a de Polignac number, because 252143535 - 2² = 252143531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252143531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1200579 + ... + 1200788.

It is an arithmetic number, because the mean of its divisors is an integer number (28816416).

Almost surely, 2^252143535 is an apocalyptic number.

252143535 is a deficient number, since it is larger than the sum of its proper divisors (208919121).

252143535 is a wasteful number, since it uses less digits than its factorization.

252143535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401382.

The product of its digits is 18000, while the sum is 30.

The square root of 252143535 is about 15879.0281503624. The cubic root of 252143535 is about 631.7558601092.

Adding to 252143535 its reverse (535341252), we get a palindrome (787484787).

It can be divided in two parts, 2521 and 43535, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 252143535 in words is "two hundred fifty-two million, one hundred forty-three thousand, five hundred thirty-five".