252778052 has 24 divisors (see below), whose sum is σ = 466784640. Its totient is φ = 119443680.

The previous prime is 252778021. The next prime is 252778063. The reversal of 252778052 is 250877252.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 252777997 and 252778015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28898 + ... + 36614.

It is an arithmetic number, because the mean of its divisors is an integer number (19449360).

Almost surely, 2^252778052 is an apocalyptic number.

It is an amenable number.

252778052 is a deficient number, since it is larger than the sum of its proper divisors (214006588).

252778052 is a wasteful number, since it uses less digits than its factorization.

252778052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8171 (or 8169 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 252778052 is about 15898.9953141700. The cubic root of 252778052 is about 632.2853522349.

The spelling of 252778052 in words is "two hundred fifty-two million, seven hundred seventy-eight thousand, fifty-two".