116402521 has 3 divisors (see below), whose sum is σ = 116413311. Its totient is φ = 116391732.

The previous prime is 116402501. The next prime is 116402527. The reversal of 116402521 is 125204611.

The square root of 116402521 is 10789.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 52722121 + 63680400 = 7261^2 + 7980^2 .

It is not a de Polignac number, because 116402521 - 2¹⁹ = 115878233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 116402492 and 116402501.

It is not an unprimeable number, because it can be changed into a prime (116402527) 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 2 ways as a sum of consecutive naturals, for example, 5395 + ... + 16183.

It is an arithmetic number, because the mean of its divisors is an integer number (38804437).

Almost surely, 2^116402521 is an apocalyptic number.

116402521 is the 10789-th square number.

116402521 is the 5395-th centered octagonal number.

It is an amenable number.

116402521 is a deficient number, since it is larger than the sum of its proper divisors (10790).

116402521 is an frugal number, since it uses more digits than its factorization.

116402521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21578 (or 10789 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The cubic root of 116402521 is about 488.2633524908.

It can be divided in two parts, 11640 and 2521, that added together give a square (14161 = 119²).

The spelling of 116402521 in words is "one hundred sixteen million, four hundred two thousand, five hundred twenty-one".