861950051 has 8 divisors (see below), whose sum is σ = 871420704. Its totient is φ = 852491520.

The previous prime is 861950021. The next prime is 861950053. The reversal of 861950051 is 150059168.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-861950051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 861949993 and 861950020.

It is not an unprimeable number, because it can be changed into a prime (861950053) 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, 280061 + ... + 283121.

It is an arithmetic number, because the mean of its divisors is an integer number (108927588).

Almost surely, 2^861950051 is an apocalyptic number.

861950051 is a deficient number, since it is larger than the sum of its proper divisors (9470653).

861950051 is a wasteful number, since it uses less digits than its factorization.

861950051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6061.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 861950051 is about 29358.9858646378. The cubic root of 861950051 is about 951.6867728065.

The spelling of 861950051 in words is "eight hundred sixty-one million, nine hundred fifty thousand, fifty-one".