52086621 has 4 divisors (see below), whose sum is σ = 69448832. Its totient is φ = 34724412.

The previous prime is 52086613. The next prime is 52086641. The reversal of 52086621 is 12668025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 52086621 - 2³ = 52086613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52086641) 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, 8681101 + ... + 8681106.

It is an arithmetic number, because the mean of its divisors is an integer number (17362208).

Almost surely, 2^52086621 is an apocalyptic number.

It is an amenable number.

52086621 is a deficient number, since it is larger than the sum of its proper divisors (17362211).

52086621 is a wasteful number, since it uses less digits than its factorization.

52086621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17362210.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 52086621 is about 7217.1061375041. The cubic root of 52086621 is about 373.4582531758.

The spelling of 52086621 in words is "fifty-two million, eighty-six thousand, six hundred twenty-one".