871513091 has 2 divisors, whose sum is σ = 871513092. Its totient is φ = 871513090.

The previous prime is 871513081. The next prime is 871513099. The reversal of 871513091 is 190315178.

871513091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 871513091 - 2²² = 867318787 is a prime.

It is a Chen prime.

It is equal to p_44627246 and since 871513091 and 44627246 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (871513099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435756545 + 435756546.

It is an arithmetic number, because the mean of its divisors is an integer number (435756546).

Almost surely, 2^871513091 is an apocalyptic number.

871513091 is a deficient number, since it is larger than the sum of its proper divisors (1).

871513091 is an equidigital number, since it uses as much as digits as its factorization.

871513091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 871513091 is about 29521.4005595941. The cubic root of 871513091 is about 955.1933824369.

It can be divided in two parts, 8715 and 13091, that multiplied together give a triangular number (114088065 = T₁₅₁₀₅).

The spelling of 871513091 in words is "eight hundred seventy-one million, five hundred thirteen thousand, ninety-one".