53497999 has 4 divisors (see below), whose sum is σ = 53722080. Its totient is φ = 53273920.

The previous prime is 53497993. The next prime is 53498021. The reversal of 53497999 is 99979435.

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

It is a cyclic number.

It is not a de Polignac number, because 53497999 - 2¹⁵ = 53465231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53497993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111682 + ... + 112159.

It is an arithmetic number, because the mean of its divisors is an integer number (13430520).

Almost surely, 2^53497999 is an apocalyptic number.

53497999 is a deficient number, since it is larger than the sum of its proper divisors (224081).

53497999 is a wasteful number, since it uses less digits than its factorization.

53497999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224080.

The product of its digits is 2755620, while the sum is 55.

The square root of 53497999 is about 7314.2326323409. The cubic root of 53497999 is about 376.8014043602.

The spelling of 53497999 in words is "fifty-three million, four hundred ninety-seven thousand, nine hundred ninety-nine".