869860051 has 2 divisors, whose sum is σ = 869860052. Its totient is φ = 869860050.

The previous prime is 869860049. The next prime is 869860087. The reversal of 869860051 is 150068968.

869860051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 869860051 - 2¹ = 869860049 is a prime.

Together with 869860049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (869860021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434930025 + 434930026.

It is an arithmetic number, because the mean of its divisors is an integer number (434930026).

Almost surely, 2^869860051 is an apocalyptic number.

869860051 is a deficient number, since it is larger than the sum of its proper divisors (1).

869860051 is an equidigital number, since it uses as much as digits as its factorization.

869860051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 869860051 is about 29493.3899543610. The cubic root of 869860051 is about 954.5890800871.

The spelling of 869860051 in words is "eight hundred sixty-nine million, eight hundred sixty thousand, fifty-one".