252730143 has 24 divisors (see below), whose sum is σ = 388127376. Its totient is φ = 157920000.

The previous prime is 252730133. The next prime is 252730147. The reversal of 252730143 is 341037252.

It is a de Polignac number, because none of the positive numbers 2^k-252730143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252730147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35113 + ... + 41693.

It is an arithmetic number, because the mean of its divisors is an integer number (16171974).

Almost surely, 2^252730143 is an apocalyptic number.

252730143 is a deficient number, since it is larger than the sum of its proper divisors (135397233).

252730143 is a wasteful number, since it uses less digits than its factorization.

252730143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6855 (or 6852 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 252730143 is about 15897.4885752436. The cubic root of 252730143 is about 632.2454040503.

Adding to 252730143 its reverse (341037252), we get a palindrome (593767395).

The spelling of 252730143 in words is "two hundred fifty-two million, seven hundred thirty thousand, one hundred forty-three".