5577778 has 4 divisors (see below), whose sum is σ = 8366670. Its totient is φ = 2788888.

The previous prime is 5577769. The next prime is 5577797. The reversal of 5577778 is 8777755.

It is a happy number.

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., 3122289 + 2455489 = 1767^2 + 1567^2 .

It is a super-2 number, since 2×5577778² = 62223214834568, which contains 22 as substring.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394443 + ... + 1394446.

Almost surely, 2^5577778 is an apocalyptic number.

5577778 is a deficient number, since it is larger than the sum of its proper divisors (2788892).

5577778 is a wasteful number, since it uses less digits than its factorization.

5577778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788891.

The product of its digits is 480200, while the sum is 46.

The square root of 5577778 is about 2361.7319915689. The cubic root of 5577778 is about 177.3455960704.

It can be divided in two parts, 55777 and 78, that added together give a palindrome (55855).

The spelling of 5577778 in words is "five million, five hundred seventy-seven thousand, seven hundred seventy-eight".