87279571 has 2 divisors, whose sum is σ = 87279572. Its totient is φ = 87279570.

The previous prime is 87279523. The next prime is 87279613. The reversal of 87279571 is 17597278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87279571 - 2¹⁷ = 87148499 is a prime.

It is not a weakly prime, because it can be changed into another prime (87279271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43639785 + 43639786.

It is an arithmetic number, because the mean of its divisors is an integer number (43639786).

Almost surely, 2^87279571 is an apocalyptic number.

87279571 is a deficient number, since it is larger than the sum of its proper divisors (1).

87279571 is an equidigital number, since it uses as much as digits as its factorization.

87279571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 46.

The square root of 87279571 is about 9342.3536113765. The cubic root of 87279571 is about 443.5788877793.

The spelling of 87279571 in words is "eighty-seven million, two hundred seventy-nine thousand, five hundred seventy-one".