861416051 has 4 divisors (see below), whose sum is σ = 862735872. Its totient is φ = 860096232.

The previous prime is 861416021. The next prime is 861416057. The reversal of 861416051 is 150614168.

861416051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 861416051 - 2¹⁸ = 861153907 is a prime.

It is a super-2 number, since 2×861416051² = 1484075225840869202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 861415999 and 861416017.

It is not an unprimeable number, because it can be changed into a prime (861416057) 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, 658931 + ... + 660236.

It is an arithmetic number, because the mean of its divisors is an integer number (215683968).

Almost surely, 2^861416051 is an apocalyptic number.

861416051 is a deficient number, since it is larger than the sum of its proper divisors (1319821).

861416051 is a wasteful number, since it uses less digits than its factorization.

861416051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319820.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 861416051 is about 29349.8901360806. The cubic root of 861416051 is about 951.4902008126.

The spelling of 861416051 in words is "eight hundred sixty-one million, four hundred sixteen thousand, fifty-one".