53131699 has 4 divisors (see below), whose sum is σ = 53383720. Its totient is φ = 52879680.

The previous prime is 53131693. The next prime is 53131709. The reversal of 53131699 is 99613135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99613135 = 5 ⋅19922627.

It is a cyclic number.

It is not a de Polignac number, because 53131699 - 2⁷ = 53131571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53131693) 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, 125694 + ... + 126115.

It is an arithmetic number, because the mean of its divisors is an integer number (13345930).

Almost surely, 2^53131699 is an apocalyptic number.

53131699 is a deficient number, since it is larger than the sum of its proper divisors (252021).

53131699 is a wasteful number, since it uses less digits than its factorization.

53131699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252020.

The product of its digits is 21870, while the sum is 37.

The square root of 53131699 is about 7289.1494016792. The cubic root of 53131699 is about 375.9394495637.

The spelling of 53131699 in words is "fifty-three million, one hundred thirty-one thousand, six hundred ninety-nine".