5782778 has 4 divisors (see below), whose sum is σ = 8674170. Its totient is φ = 2891388.

The previous prime is 5782759. The next prime is 5782787. The reversal of 5782778 is 8772875.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5442889 + 339889 = 2333^2 + 583^2 .

It is a d-powerful number, because it can be written as 5² + 7² + 8 + 2¹⁰ + 7⁵ + 7⁸ + 8² .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445693 + ... + 1445696.

Almost surely, 2^5782778 is an apocalyptic number.

5782778 is a deficient number, since it is larger than the sum of its proper divisors (2891392).

5782778 is a wasteful number, since it uses less digits than its factorization.

5782778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891391.

The product of its digits is 219520, while the sum is 44.

The square root of 5782778 is about 2404.7407344660. The cubic root of 5782778 is about 179.4921694378.

It can be divided in two parts, 57827 and 78, that multiplied together give a triangular number (4510506 = T₃₀₀₃).

The spelling of 5782778 in words is "five million, seven hundred eighty-two thousand, seven hundred seventy-eight".