210132091 has 4 divisors (see below), whose sum is σ = 226296112. Its totient is φ = 193968072.

The previous prime is 210132079. The next prime is 210132103. The reversal of 210132091 is 190231012.

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

It is an interprime number because it is at equal distance from previous prime (210132079) and next prime (210132103).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210132091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210132061) 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, 8081991 + ... + 8082016.

It is an arithmetic number, because the mean of its divisors is an integer number (56574028).

Almost surely, 2^210132091 is an apocalyptic number.

210132091 is a deficient number, since it is larger than the sum of its proper divisors (16164021).

210132091 is a wasteful number, since it uses less digits than its factorization.

210132091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16164020.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 210132091 is about 14495.9336022210. The cubic root of 210132091 is about 594.5167943293.

It can be divided in two parts, 21013 and 2091, that added together give a square (23104 = 152²).

The spelling of 210132091 in words is "two hundred ten million, one hundred thirty-two thousand, ninety-one".