53664085 has 4 divisors (see below), whose sum is σ = 64396908. Its totient is φ = 42931264.

The previous prime is 53664077. The next prime is 53664101. The reversal of 53664085 is 58046635.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58046635 = 5 ⋅11609327.

It can be written as a sum of positive squares in 2 ways, for example, as 35533521 + 18130564 = 5961^2 + 4258^2 .

It is a cyclic number.

It is not a de Polignac number, because 53664085 - 2³ = 53664077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5366404 + ... + 5366413.

It is an arithmetic number, because the mean of its divisors is an integer number (16099227).

Almost surely, 2^53664085 is an apocalyptic number.

It is an amenable number.

53664085 is a deficient number, since it is larger than the sum of its proper divisors (10732823).

53664085 is a wasteful number, since it uses less digits than its factorization.

53664085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10732822.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 53664085 is about 7325.5774516416. The cubic root of 53664085 is about 377.1909316245.

The spelling of 53664085 in words is "fifty-three million, six hundred sixty-four thousand, eighty-five".