53418891 has 4 divisors (see below), whose sum is σ = 71225192. Its totient is φ = 35612592.

The previous prime is 53418889. The next prime is 53418901. The reversal of 53418891 is 19881435.

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

It is not a de Polignac number, because 53418891 - 2¹ = 53418889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53418821) 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, 8903146 + ... + 8903151.

It is an arithmetic number, because the mean of its divisors is an integer number (17806298).

Almost surely, 2^53418891 is an apocalyptic number.

53418891 is a deficient number, since it is larger than the sum of its proper divisors (17806301).

53418891 is a wasteful number, since it uses less digits than its factorization.

53418891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17806300.

The product of its digits is 34560, while the sum is 39.

The square root of 53418891 is about 7308.8228190318. The cubic root of 53418891 is about 376.6155861328.

The spelling of 53418891 in words is "fifty-three million, four hundred eighteen thousand, eight hundred ninety-one".