53864997 has 4 divisors (see below), whose sum is σ = 71820000. Its totient is φ = 35909996.

The previous prime is 53864963. The next prime is 53864999. The reversal of 53864997 is 79946835.

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 53864997 - 2⁷ = 53864869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53864999) 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, 8977497 + ... + 8977502.

It is an arithmetic number, because the mean of its divisors is an integer number (17955000).

Almost surely, 2^53864997 is an apocalyptic number.

It is an amenable number.

53864997 is a deficient number, since it is larger than the sum of its proper divisors (17955003).

53864997 is a wasteful number, since it uses less digits than its factorization.

53864997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17955002.

The product of its digits is 1632960, while the sum is 51.

The square root of 53864997 is about 7339.2776892553. The cubic root of 53864997 is about 377.6610648460.

The spelling of 53864997 in words is "fifty-three million, eight hundred sixty-four thousand, nine hundred ninety-seven".