53391859 has 4 divisors (see below), whose sum is σ = 54527904. Its totient is φ = 52255816.

The previous prime is 53391817. The next prime is 53391869. The reversal of 53391859 is 95819335.

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 53391859 - 2⁹ = 53391347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53391869) 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, 567952 + ... + 568045.

It is an arithmetic number, because the mean of its divisors is an integer number (13631976).

Almost surely, 2^53391859 is an apocalyptic number.

53391859 is a deficient number, since it is larger than the sum of its proper divisors (1136045).

53391859 is a wasteful number, since it uses less digits than its factorization.

53391859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136044.

The product of its digits is 145800, while the sum is 43.

The square root of 53391859 is about 7306.9733132125. The cubic root of 53391859 is about 376.5520481216.

The spelling of 53391859 in words is "fifty-three million, three hundred ninety-one thousand, eight hundred fifty-nine".