53603191 has 4 divisors (see below), whose sum is σ = 53624592. Its totient is φ = 53581792.

The previous prime is 53603189. The next prime is 53603203. The reversal of 53603191 is 19130635.

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 53603191 - 2¹ = 53603189 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 (53603111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6355 + ... + 12148.

It is an arithmetic number, because the mean of its divisors is an integer number (13406148).

Almost surely, 2^53603191 is an apocalyptic number.

53603191 is a deficient number, since it is larger than the sum of its proper divisors (21401).

53603191 is a wasteful number, since it uses less digits than its factorization.

53603191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21400.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 53603191 is about 7321.4200125386. The cubic root of 53603191 is about 377.0482082507.

The spelling of 53603191 in words is "fifty-three million, six hundred three thousand, one hundred ninety-one".