53328278 has 4 divisors (see below), whose sum is σ = 79992420. Its totient is φ = 26664138.

The previous prime is 53328263. The next prime is 53328311. The reversal of 53328278 is 87282335.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13332068 + ... + 13332071.

It is an arithmetic number, because the mean of its divisors is an integer number (19998105).

Almost surely, 2^53328278 is an apocalyptic number.

53328278 is a deficient number, since it is larger than the sum of its proper divisors (26664142).

53328278 is a wasteful number, since it uses less digits than its factorization.

53328278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26664141.

The product of its digits is 80640, while the sum is 38.

The square root of 53328278 is about 7302.6213101872. The cubic root of 53328278 is about 376.4025180496.

The spelling of 53328278 in words is "fifty-three million, three hundred twenty-eight thousand, two hundred seventy-eight".