2166252043 has 8 divisors (see below), whose sum is σ = 2215070208. Its totient is φ = 2117547624.

The previous prime is 2166252041. The next prime is 2166252089. The reversal of 2166252043 is 3402526612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2166252043 - 2¹ = 2166252041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2166251996 and 2166252014.

It is not an unprimeable number, because it can be changed into a prime (2166252041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10680 + ... + 66682.

It is an arithmetic number, because the mean of its divisors is an integer number (276883776).

Almost surely, 2^2166252043 is an apocalyptic number.

2166252043 is a deficient number, since it is larger than the sum of its proper divisors (48818165).

2166252043 is an equidigital number, since it uses as much as digits as its factorization.

2166252043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56873.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 2166252043 is about 46543.0128268465. The cubic root of 2166252043 is about 1293.9067995195.

Adding to 2166252043 its reverse (3402526612), we get a palindrome (5568778655).

The spelling of 2166252043 in words is "two billion, one hundred sixty-six million, two hundred fifty-two thousand, forty-three".