87530071 has 2 divisors, whose sum is σ = 87530072. Its totient is φ = 87530070.

The previous prime is 87530063. The next prime is 87530077. The reversal of 87530071 is 17003578.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87530071 - 2³ = 87530063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87530077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43765035 + 43765036.

It is an arithmetic number, because the mean of its divisors is an integer number (43765036).

Almost surely, 2^87530071 is an apocalyptic number.

87530071 is a deficient number, since it is larger than the sum of its proper divisors (1).

87530071 is an equidigital number, since it uses as much as digits as its factorization.

87530071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 87530071 is about 9355.7506914197. The cubic root of 87530071 is about 444.0028524964.

The spelling of 87530071 in words is "eighty-seven million, five hundred thirty thousand, seventy-one".