116021509 has 4 divisors (see below), whose sum is σ = 116121760. Its totient is φ = 115921260.

The previous prime is 116021501. The next prime is 116021527. The reversal of 116021509 is 905120611.

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, and also an emirpimes, since its reverse is a distinct semiprime: 905120611 = 941 ⋅961871.

It is a cyclic number.

It is not a de Polignac number, because 116021509 - 2³ = 116021501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116021501) 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, 48369 + ... + 50710.

It is an arithmetic number, because the mean of its divisors is an integer number (29030440).

Almost surely, 2^116021509 is an apocalyptic number.

It is an amenable number.

116021509 is a deficient number, since it is larger than the sum of its proper divisors (100251).

116021509 is an equidigital number, since it uses as much as digits as its factorization.

116021509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100250.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 116021509 is about 10771.3280982430. The cubic root of 116021509 is about 487.7300377417.

The spelling of 116021509 in words is "one hundred sixteen million, twenty-one thousand, five hundred nine".