252945487 has 4 divisors (see below), whose sum is σ = 253002816. Its totient is φ = 252888160.

The previous prime is 252945481. The next prime is 252945491. The reversal of 252945487 is 784549252.

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-252945487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252945481) 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, 21439 + ... + 31072.

It is an arithmetic number, because the mean of its divisors is an integer number (63250704).

Almost surely, 2^252945487 is an apocalyptic number.

252945487 is a deficient number, since it is larger than the sum of its proper divisors (57329).

252945487 is an equidigital number, since it uses as much as digits as its factorization.

252945487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57328.

The product of its digits is 806400, while the sum is 46.

The square root of 252945487 is about 15904.2600267979. The cubic root of 252945487 is about 632.4249257080.

The spelling of 252945487 in words is "two hundred fifty-two million, nine hundred forty-five thousand, four hundred eighty-seven".