252689519 has 4 divisors (see below), whose sum is σ = 258852720. Its totient is φ = 246526320.

The previous prime is 252689491. The next prime is 252689527. The reversal of 252689519 is 915986252.

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-252689519 is a prime.

It is a super-2 number, since 2×252689519² = 127703986024902722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252689119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3081539 + ... + 3081620.

It is an arithmetic number, because the mean of its divisors is an integer number (64713180).

Almost surely, 2^252689519 is an apocalyptic number.

252689519 is a deficient number, since it is larger than the sum of its proper divisors (6163201).

252689519 is an equidigital number, since it uses as much as digits as its factorization.

252689519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6163200.

The product of its digits is 388800, while the sum is 47.

The square root of 252689519 is about 15896.2108378066. The cubic root of 252689519 is about 632.2115263955.

The spelling of 252689519 in words is "two hundred fifty-two million, six hundred eighty-nine thousand, five hundred nineteen".