252142551 has 20 divisors (see below), whose sum is σ = 377238312. Its totient is φ = 167835888.

The previous prime is 252142543. The next prime is 252142601. The reversal of 252142551 is 155241252.

It is not a de Polignac number, because 252142551 - 2³ = 252142543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252142151) 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 19 ways as a sum of consecutive naturals, for example, 60600 + ... + 64626.

Almost surely, 2^252142551 is an apocalyptic number.

252142551 is a deficient number, since it is larger than the sum of its proper divisors (125095761).

252142551 is an equidigital number, since it uses as much as digits as its factorization.

252142551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812 (or 4803 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 252142551 is about 15878.9971660681. The cubic root of 252142551 is about 631.7550382909.

The spelling of 252142551 in words is "two hundred fifty-two million, one hundred forty-two thousand, five hundred fifty-one".