812154451 has 2 divisors, whose sum is σ = 812154452. Its totient is φ = 812154450.

The previous prime is 812154439. The next prime is 812154463. The reversal of 812154451 is 154451218.

812154451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (812154439) and next prime (812154463).

It is a cyclic number.

It is not a de Polignac number, because 812154451 - 2¹⁵ = 812121683 is a prime.

It is a super-2 number, since 2×812154451² = 1319189704558222802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (812154401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406077225 + 406077226.

It is an arithmetic number, because the mean of its divisors is an integer number (406077226).

Almost surely, 2^812154451 is an apocalyptic number.

812154451 is a deficient number, since it is larger than the sum of its proper divisors (1).

812154451 is an equidigital number, since it uses as much as digits as its factorization.

812154451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6400, while the sum is 31.

The square root of 812154451 is about 28498.3236524537. The cubic root of 812154451 is about 932.9954868061.

The spelling of 812154451 in words is "eight hundred twelve million, one hundred fifty-four thousand, four hundred fifty-one".