53551699 has 4 divisors (see below), whose sum is σ = 54857880. Its totient is φ = 52245520.

The previous prime is 53551669. The next prime is 53551703. The reversal of 53551699 is 99615535.

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 53551699 - 2⁹ = 53551187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53551669) 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, 653029 + ... + 653110.

It is an arithmetic number, because the mean of its divisors is an integer number (13714470).

Almost surely, 2^53551699 is an apocalyptic number.

53551699 is a deficient number, since it is larger than the sum of its proper divisors (1306181).

53551699 is a wasteful number, since it uses less digits than its factorization.

53551699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306180.

The product of its digits is 182250, while the sum is 43.

The square root of 53551699 is about 7317.9026366849. The cubic root of 53551699 is about 376.9274369181.

The spelling of 53551699 in words is "fifty-three million, five hundred fifty-one thousand, six hundred ninety-nine".