2523166861 has 8 divisors (see below), whose sum is σ = 2633742720. Its totient is φ = 2412663792.

The previous prime is 2523166819. The next prime is 2523166873. The reversal of 2523166861 is 1686613252.

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 2523166861 - 2⁷ = 2523166733 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 (2523166561) 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, 59811 + ... + 92863.

It is an arithmetic number, because the mean of its divisors is an integer number (329217840).

Almost surely, 2^2523166861 is an apocalyptic number.

It is an amenable number.

2523166861 is a deficient number, since it is larger than the sum of its proper divisors (110575859).

2523166861 is a wasteful number, since it uses less digits than its factorization.

2523166861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36395.

The product of its digits is 103680, while the sum is 40.

The square root of 2523166861 is about 50231.1343789885. The cubic root of 2523166861 is about 1361.3882272655.

The spelling of 2523166861 in words is "two billion, five hundred twenty-three million, one hundred sixty-six thousand, eight hundred sixty-one".