53391273 has 16 divisors (see below), whose sum is σ = 80700480. Its totient is φ = 31126464.

The previous prime is 53391263. The next prime is 53391313. The reversal of 53391273 is 37219335.

It is not a de Polignac number, because 53391273 - 2⁶ = 53391209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53391223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35286 + ... + 36767.

It is an arithmetic number, because the mean of its divisors is an integer number (5043780).

Almost surely, 2^53391273 is an apocalyptic number.

It is an amenable number.

53391273 is a deficient number, since it is larger than the sum of its proper divisors (27309207).

53391273 is a wasteful number, since it uses less digits than its factorization.

53391273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72088.

The product of its digits is 17010, while the sum is 33.

The square root of 53391273 is about 7306.9332144204. The cubic root of 53391273 is about 376.5506705064.

It can be divided in two parts, 533 and 91273, that added together give a triangular number (91806 = T₄₂₈).

The spelling of 53391273 in words is "fifty-three million, three hundred ninety-one thousand, two hundred seventy-three".