56863778 has 4 divisors (see below), whose sum is σ = 85295670. Its totient is φ = 28431888.

The previous prime is 56863769. The next prime is 56863811. The reversal of 56863778 is 87736865.

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., 56445169 + 418609 = 7513^2 + 647^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14215943 + ... + 14215946.

Almost surely, 2^56863778 is an apocalyptic number.

56863778 is a deficient number, since it is larger than the sum of its proper divisors (28431892).

56863778 is a wasteful number, since it uses less digits than its factorization.

56863778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28431891.

The product of its digits is 1693440, while the sum is 50.

The square root of 56863778 is about 7540.8075164401. The cubic root of 56863778 is about 384.5432893237.

It can be divided in two parts, 568 and 63778, that added together give a palindrome (64346).

The spelling of 56863778 in words is "fifty-six million, eight hundred sixty-three thousand, seven hundred seventy-eight".