116562721 has 4 divisors (see below), whose sum is σ = 127159344. Its totient is φ = 105966100.

The previous prime is 116562709. The next prime is 116562749. The reversal of 116562721 is 127265611.

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: 127265611 = 11 ⋅11569601.

It is a cyclic number.

It is not a de Polignac number, because 116562721 - 2¹⁷ = 116431649 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116563721) 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, 5298295 + ... + 5298316.

It is an arithmetic number, because the mean of its divisors is an integer number (31789836).

Almost surely, 2^116562721 is an apocalyptic number.

116562721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

116562721 is a deficient number, since it is larger than the sum of its proper divisors (10596623).

116562721 is a wasteful number, since it uses less digits than its factorization.

116562721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10596622.

The product of its digits is 5040, while the sum is 31.

The square root of 116562721 is about 10796.4216757220. The cubic root of 116562721 is about 488.4872420659.

The spelling of 116562721 in words is "one hundred sixteen million, five hundred sixty-two thousand, seven hundred twenty-one".