252311535 has 144 divisors (see below), whose sum is σ = 553153536. Its totient is φ = 105670656.

The previous prime is 252311519. The next prime is 252311551. The reversal of 252311535 is 535113252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (252311519) and next prime (252311551).

It is not a de Polignac number, because 252311535 - 2⁴ = 252311519 is a prime.

It is a super-2 number, since 2×252311535² = 127322221388112450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252311499 and 252311508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1986642 + ... + 1986768.

It is an arithmetic number, because the mean of its divisors is an integer number (3841344).

Almost surely, 2^252311535 is an apocalyptic number.

252311535 is an abundant number, since it is smaller than the sum of its proper divisors (300842001).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252311535 is a wasteful number, since it uses less digits than its factorization.

252311535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 212 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 252311535 is about 15884.3172657814. The cubic root of 252311535 is about 631.8961392312.

Adding to 252311535 its reverse (535113252), we get a palindrome (787424787).

The spelling of 252311535 in words is "two hundred fifty-two million, three hundred eleven thousand, five hundred thirty-five".