851451971 has 2 divisors, whose sum is σ = 851451972. Its totient is φ = 851451970.

The previous prime is 851451941. The next prime is 851452001. The reversal of 851451971 is 179154158.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (851451941) and next prime (851452001).

It is a cyclic number.

It is not a de Polignac number, because 851451971 - 2¹⁰ = 851450947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (851451911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425725985 + 425725986.

It is an arithmetic number, because the mean of its divisors is an integer number (425725986).

Almost surely, 2^851451971 is an apocalyptic number.

851451971 is a deficient number, since it is larger than the sum of its proper divisors (1).

851451971 is an equidigital number, since it uses as much as digits as its factorization.

851451971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 41.

The square root of 851451971 is about 29179.6499464952. The cubic root of 851451971 is about 947.8073052625.

The spelling of 851451971 in words is "eight hundred fifty-one million, four hundred fifty-one thousand, nine hundred seventy-one".