252778619 has 8 divisors (see below), whose sum is σ = 263374848. Its totient is φ = 242335080.

The previous prime is 252778577. The next prime is 252778637. The reversal of 252778619 is 916877252.

It is a happy number.

252778619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252778619 - 2¹² = 252774523 is a prime.

It is a super-2 number, since 2×252778619² = 127794060447094322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252778699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34787 + ... + 41420.

It is an arithmetic number, because the mean of its divisors is an integer number (32921856).

Almost surely, 2^252778619 is an apocalyptic number.

252778619 is a deficient number, since it is larger than the sum of its proper divisors (10596229).

252778619 is a wasteful number, since it uses less digits than its factorization.

252778619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76345.

The product of its digits is 423360, while the sum is 47.

The square root of 252778619 is about 15899.0131454754. The cubic root of 252778619 is about 632.2858249890.

The spelling of 252778619 in words is "two hundred fifty-two million, seven hundred seventy-eight thousand, six hundred nineteen".