53508778 has 4 divisors (see below), whose sum is σ = 80263170. Its totient is φ = 26754388.

The previous prime is 53508761. The next prime is 53508803. The reversal of 53508778 is 87780535.

53508778 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., 40998409 + 12510369 = 6403^2 + 3537^2 .

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, 13377193 + ... + 13377196.

Almost surely, 2^53508778 is an apocalyptic number.

53508778 is a deficient number, since it is larger than the sum of its proper divisors (26754392).

53508778 is a wasteful number, since it uses less digits than its factorization.

53508778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26754391.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 53508778 is about 7314.9694462793. The cubic root of 53508778 is about 376.8267091670.

The spelling of 53508778 in words is "fifty-three million, five hundred eight thousand, seven hundred seventy-eight".