53667291 has 4 divisors (see below), whose sum is σ = 71556392. Its totient is φ = 35778192.

The previous prime is 53667281. The next prime is 53667301. The reversal of 53667291 is 19276635.

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

It is an interprime number because it is at equal distance from previous prime (53667281) and next prime (53667301).

It is not a de Polignac number, because 53667291 - 2⁶ = 53667227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53667281) 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, 8944546 + ... + 8944551.

It is an arithmetic number, because the mean of its divisors is an integer number (17889098).

Almost surely, 2^53667291 is an apocalyptic number.

53667291 is a deficient number, since it is larger than the sum of its proper divisors (17889101).

53667291 is a wasteful number, since it uses less digits than its factorization.

53667291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17889100.

The product of its digits is 68040, while the sum is 39.

The square root of 53667291 is about 7325.7962707135. The cubic root of 53667291 is about 377.1984428557.

The spelling of 53667291 in words is "fifty-three million, six hundred sixty-seven thousand, two hundred ninety-one".