252144547 has 4 divisors (see below), whose sum is σ = 258294456. Its totient is φ = 245994640.

The previous prime is 252144523. The next prime is 252144551. The reversal of 252144547 is 745441252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252144547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252144247) 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, 3074893 + ... + 3074974.

It is an arithmetic number, because the mean of its divisors is an integer number (64573614).

Almost surely, 2^252144547 is an apocalyptic number.

252144547 is a deficient number, since it is larger than the sum of its proper divisors (6149909).

252144547 is an equidigital number, since it uses as much as digits as its factorization.

252144547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6149908.

The product of its digits is 44800, while the sum is 34.

The square root of 252144547 is about 15879.0600162604. The cubic root of 252144547 is about 631.7567053105.

Adding to 252144547 its reverse (745441252), we get a palindrome (997585799).

The spelling of 252144547 in words is "two hundred fifty-two million, one hundred forty-four thousand, five hundred forty-seven".