53305278 has 16 divisors (see below), whose sum is σ = 114811536. Its totient is φ = 16401600.

The previous prime is 53305253. The next prime is 53305313. The reversal of 53305278 is 87250335.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341623 + ... + 341778.

It is an arithmetic number, because the mean of its divisors is an integer number (7175721).

Almost surely, 2^53305278 is an apocalyptic number.

53305278 is an abundant number, since it is smaller than the sum of its proper divisors (61506258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53305278 is a wasteful number, since it uses less digits than its factorization.

53305278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683419.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 53305278 is about 7301.0463633646. The cubic root of 53305278 is about 376.3483972771.

The spelling of 53305278 in words is "fifty-three million, three hundred five thousand, two hundred seventy-eight".