52102091 has 4 divisors (see below), whose sum is σ = 52178184. Its totient is φ = 52026000.

The previous prime is 52102051. The next prime is 52102147. The reversal of 52102091 is 19020125.

52102091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 52102091 - 2²² = 47907787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52102051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37010 + ... + 38391.

It is an arithmetic number, because the mean of its divisors is an integer number (13044546).

Almost surely, 2^52102091 is an apocalyptic number.

52102091 is a deficient number, since it is larger than the sum of its proper divisors (76093).

52102091 is an equidigital number, since it uses as much as digits as its factorization.

52102091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76092.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 52102091 is about 7218.1778171503. The cubic root of 52102091 is about 373.4952225369.

The spelling of 52102091 in words is "fifty-two million, one hundred two thousand, ninety-one".