53816897 has 4 divisors (see below), whose sum is σ = 54310740. Its totient is φ = 53323056.

The previous prime is 53816891. The next prime is 53816929. The reversal of 53816897 is 79861835.

It is a happy number.

It is a Cunningham number, because it is equal to 7336²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37503376 + 16313521 = 6124^2 + 4039^2 .

It is a cyclic number.

It is not a de Polignac number, because 53816897 - 2¹⁰ = 53815873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53816891) 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, 246758 + ... + 246975.

It is an arithmetic number, because the mean of its divisors is an integer number (13577685).

Almost surely, 2^53816897 is an apocalyptic number.

It is an amenable number.

53816897 is a deficient number, since it is larger than the sum of its proper divisors (493843).

53816897 is a wasteful number, since it uses less digits than its factorization.

53816897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493842.

The product of its digits is 362880, while the sum is 47.

The square root of 53816897 is about 7336.0000681570. Note that the first 4 decimals coincide. The cubic root of 53816897 is about 377.5486176291.

The spelling of 53816897 in words is "fifty-three million, eight hundred sixteen thousand, eight hundred ninety-seven".