87532481 has 2 divisors, whose sum is σ = 87532482. Its totient is φ = 87532480.

The previous prime is 87532453. The next prime is 87532513. The reversal of 87532481 is 18423578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83101456 + 4431025 = 9116^2 + 2105^2 .

It is a cyclic number.

It is not a de Polignac number, because 87532481 - 2¹⁴ = 87516097 is a prime.

It is a super-2 number, since 2×87532481² = 15323870460030722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87562481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43766240 + 43766241.

It is an arithmetic number, because the mean of its divisors is an integer number (43766241).

Almost surely, 2^87532481 is an apocalyptic number.

It is an amenable number.

87532481 is a deficient number, since it is larger than the sum of its proper divisors (1).

87532481 is an equidigital number, since it uses as much as digits as its factorization.

87532481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 87532481 is about 9355.8794883218. The cubic root of 87532481 is about 444.0069274276.

The spelling of 87532481 in words is "eighty-seven million, five hundred thirty-two thousand, four hundred eighty-one".