52729778 has 4 divisors (see below), whose sum is σ = 79094670. Its totient is φ = 26364888.

The previous prime is 52729771. The next prime is 52729819. The reversal of 52729778 is 87792725.

52729778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 50367409 + 2362369 = 7097^2 + 1537^2 .

It is not an unprimeable number, because it can be changed into a prime (52729771) by changing a digit.

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, 13182443 + ... + 13182446.

Almost surely, 2^52729778 is an apocalyptic number.

52729778 is a deficient number, since it is larger than the sum of its proper divisors (26364892).

52729778 is a wasteful number, since it uses less digits than its factorization.

52729778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26364891.

The product of its digits is 493920, while the sum is 47.

The square root of 52729778 is about 7261.5272498284. The cubic root of 52729778 is about 374.9891030908.

The spelling of 52729778 in words is "fifty-two million, seven hundred twenty-nine thousand, seven hundred seventy-eight".