53665594 has 4 divisors (see below), whose sum is σ = 80498394. Its totient is φ = 26832796.

The previous prime is 53665571. The next prime is 53665603. The reversal of 53665594 is 49556635.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49556635 = 5 ⋅9911327.

It can be written as a sum of positive squares in only one way, i.e., 39879225 + 13786369 = 6315^2 + 3713^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53665594.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13416397 + ... + 13416400.

Almost surely, 2^53665594 is an apocalyptic number.

53665594 is a deficient number, since it is larger than the sum of its proper divisors (26832800).

53665594 is a wasteful number, since it uses less digits than its factorization.

53665594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26832799.

The product of its digits is 486000, while the sum is 43.

The square root of 53665594 is about 7325.6804462111. The cubic root of 53665594 is about 377.1944670478.

The spelling of 53665594 in words is "fifty-three million, six hundred sixty-five thousand, five hundred ninety-four".