814591051 has 2 divisors, whose sum is σ = 814591052. Its totient is φ = 814591050.

The previous prime is 814591049. The next prime is 814591073. The reversal of 814591051 is 150195418.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 814591051 - 2¹ = 814591049 is a prime.

Together with 814591049, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 814590998 and 814591016.

It is not a weakly prime, because it can be changed into another prime (814591021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407295525 + 407295526.

It is an arithmetic number, because the mean of its divisors is an integer number (407295526).

Almost surely, 2^814591051 is an apocalyptic number.

814591051 is a deficient number, since it is larger than the sum of its proper divisors (1).

814591051 is an equidigital number, since it uses as much as digits as its factorization.

814591051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 34.

The square root of 814591051 is about 28541.0415191878. The cubic root of 814591051 is about 933.9276030712.

The spelling of 814591051 in words is "eight hundred fourteen million, five hundred ninety-one thousand, fifty-one".