53278773 has 4 divisors (see below), whose sum is σ = 71038368. Its totient is φ = 35519180.

The previous prime is 53278751. The next prime is 53278807. The reversal of 53278773 is 37787235.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53278773 - 2¹⁷ = 53147701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53278703) 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, 8879793 + ... + 8879798.

It is an arithmetic number, because the mean of its divisors is an integer number (17759592).

Almost surely, 2^53278773 is an apocalyptic number.

It is an amenable number.

53278773 is a deficient number, since it is larger than the sum of its proper divisors (17759595).

53278773 is a wasteful number, since it uses less digits than its factorization.

53278773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17759594.

The product of its digits is 246960, while the sum is 42.

The square root of 53278773 is about 7299.2309868917. The cubic root of 53278773 is about 376.2860096586.

The spelling of 53278773 in words is "fifty-three million, two hundred seventy-eight thousand, seven hundred seventy-three".