999255151 has 2 divisors, whose sum is σ = 999255152. Its totient is φ = 999255150.

The previous prime is 999255143. The next prime is 999255193. The reversal of 999255151 is 151552999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999255151 - 2³ = 999255143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999255251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499627575 + 499627576.

It is an arithmetic number, because the mean of its divisors is an integer number (499627576).

Almost surely, 2^999255151 is an apocalyptic number.

999255151 is a deficient number, since it is larger than the sum of its proper divisors (1).

999255151 is an equidigital number, since it uses as much as digits as its factorization.

999255151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 182250, while the sum is 46.

The square root of 999255151 is about 31610.9973110625. The cubic root of 999255151 is about 999.7516553300.

The spelling of 999255151 in words is "nine hundred ninety-nine million, two hundred fifty-five thousand, one hundred fifty-one".