252856919 has 4 divisors (see below), whose sum is σ = 288979344. Its totient is φ = 216734496.

The previous prime is 252856913. The next prime is 252856931. The reversal of 252856919 is 919658252.

252856919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-252856919 is a prime.

It is a super-2 number, since 2×252856919² = 127873242972345122, 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 (252856913) 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, 18061202 + ... + 18061215.

It is an arithmetic number, because the mean of its divisors is an integer number (72244836).

Almost surely, 2^252856919 is an apocalyptic number.

252856919 is a deficient number, since it is larger than the sum of its proper divisors (36122425).

252856919 is an equidigital number, since it uses as much as digits as its factorization.

252856919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36122424.

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

The square root of 252856919 is about 15901.4753718012. The cubic root of 252856919 is about 632.3511032805.

The spelling of 252856919 in words is "two hundred fifty-two million, eight hundred fifty-six thousand, nine hundred nineteen".