53278933 has 4 divisors (see below), whose sum is σ = 53299180. Its totient is φ = 53258688.

The previous prime is 53278931. The next prime is 53278949. The reversal of 53278933 is 33987235.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33987235 = 5 ⋅6797447.

It can be written as a sum of positive squares in 2 ways, for example, as 3392964 + 49885969 = 1842^2 + 7063^2 .

It is a cyclic number.

It is not a de Polignac number, because 53278933 - 2¹ = 53278931 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53278931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5460 + ... + 11677.

It is an arithmetic number, because the mean of its divisors is an integer number (13324795).

Almost surely, 2^53278933 is an apocalyptic number.

It is an amenable number.

53278933 is a deficient number, since it is larger than the sum of its proper divisors (20247).

53278933 is a wasteful number, since it uses less digits than its factorization.

53278933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20246.

The product of its digits is 136080, while the sum is 40.

The square root of 53278933 is about 7299.2419469422. The cubic root of 53278933 is about 376.2863863296.

The spelling of 53278933 in words is "fifty-three million, two hundred seventy-eight thousand, nine hundred thirty-three".