252977143 has 4 divisors (see below), whose sum is σ = 261137728. Its totient is φ = 244816560.

The previous prime is 252977129. The next prime is 252977149. The reversal of 252977143 is 341779252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 252977143 - 2⁹ = 252976631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252977096 and 252977105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252977149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4080246 + ... + 4080307.

It is an arithmetic number, because the mean of its divisors is an integer number (65284432).

Almost surely, 2^252977143 is an apocalyptic number.

252977143 is a deficient number, since it is larger than the sum of its proper divisors (8160585).

252977143 is an equidigital number, since it uses as much as digits as its factorization.

252977143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8160584.

The product of its digits is 105840, while the sum is 40.

The square root of 252977143 is about 15905.2552007190. The cubic root of 252977143 is about 632.4513071609.

The spelling of 252977143 in words is "two hundred fifty-two million, nine hundred seventy-seven thousand, one hundred forty-three".