52778626 has 8 divisors (see below), whose sum is σ = 79213644. Its totient is φ = 26374080.

The previous prime is 52778623. The next prime is 52778633. The reversal of 52778626 is 62687725.

It can be written as a sum of positive squares in 2 ways, for example, as 41589601 + 11189025 = 6449^2 + 3345^2 .

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

It is not an unprimeable number, because it can be changed into a prime (52778623) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2635 + ... + 10606.

Almost surely, 2^52778626 is an apocalyptic number.

52778626 is a deficient number, since it is larger than the sum of its proper divisors (26435018).

52778626 is a wasteful number, since it uses less digits than its factorization.

52778626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15236.

The product of its digits is 282240, while the sum is 43.

The square root of 52778626 is about 7264.8899509903. The cubic root of 52778626 is about 375.1048619338.

Subtracting 52778626 from its reverse (62687725), we obtain a palindrome (9909099).

The spelling of 52778626 in words is "fifty-two million, seven hundred seventy-eight thousand, six hundred twenty-six".