252789417 has 10 divisors (see below), whose sum is σ = 377623818. Its totient is φ = 168526224.

The previous prime is 252789413. The next prime is 252789443. The reversal of 252789417 is 714987252.

It is a happy number.

252789417 is a `hidden beast` number, since 2 + 527 + 89 + 41 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 233814681 + 18974736 = 15291^2 + 4356^2 .

It is not a de Polignac number, because 252789417 - 2² = 252789413 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252789413) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1560348 + ... + 1560509.

Almost surely, 2^252789417 is an apocalyptic number.

252789417 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

252789417 is a deficient number, since it is larger than the sum of its proper divisors (124834401).

252789417 is an equidigital number, since it uses as much as digits as its factorization.

252789417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120869 (or 3120860 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 252789417 is about 15899.3527226740. The cubic root of 252789417 is about 632.2948280251.

The spelling of 252789417 in words is "two hundred fifty-two million, seven hundred eighty-nine thousand, four hundred seventeen".