53921559 has 8 divisors (see below), whose sum is σ = 72204912. Its totient is φ = 35792960.

The previous prime is 53921557. The next prime is 53921573. The reversal of 53921559 is 95512935.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53921559 - 2¹ = 53921557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53921551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37872 + ... + 39269.

It is an arithmetic number, because the mean of its divisors is an integer number (9025614).

Almost surely, 2^53921559 is an apocalyptic number.

53921559 is a deficient number, since it is larger than the sum of its proper divisors (18283353).

53921559 is a wasteful number, since it uses less digits than its factorization.

53921559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77377.

The product of its digits is 60750, while the sum is 39.

The square root of 53921559 is about 7343.1300546838. The cubic root of 53921559 is about 377.7932087475.

The spelling of 53921559 in words is "fifty-three million, nine hundred twenty-one thousand, five hundred fifty-nine".