53485889 has 4 divisors (see below), whose sum is σ = 55330260. Its totient is φ = 51641520.

The previous prime is 53485877. The next prime is 53485981. The reversal of 53485889 is 98858435.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43033600 + 10452289 = 6560^2 + 3233^2 .

It is a cyclic number.

It is not a de Polignac number, because 53485889 - 2²⁰ = 52437313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53485829) 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, 922142 + ... + 922199.

It is an arithmetic number, because the mean of its divisors is an integer number (13832565).

Almost surely, 2^53485889 is an apocalyptic number.

It is an amenable number.

53485889 is a deficient number, since it is larger than the sum of its proper divisors (1844371).

53485889 is a wasteful number, since it uses less digits than its factorization.

53485889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844370.

The product of its digits is 1382400, while the sum is 50.

The square root of 53485889 is about 7313.4047474483. The cubic root of 53485889 is about 376.7729708397.

The spelling of 53485889 in words is "fifty-three million, four hundred eighty-five thousand, eight hundred eighty-nine".