87204529 has 2 divisors, whose sum is σ = 87204530. Its totient is φ = 87204528.

The previous prime is 87204527. The next prime is 87204553. The reversal of 87204529 is 92540278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86992929 + 211600 = 9327^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 87204529 - 2¹ = 87204527 is a prime.

It is a super-2 number, since 2×87204529² = 15209259756223682, which contains 22 as substring.

Together with 87204527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (87204521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43602264 + 43602265.

It is an arithmetic number, because the mean of its divisors is an integer number (43602265).

Almost surely, 2^87204529 is an apocalyptic number.

It is an amenable number.

87204529 is a deficient number, since it is larger than the sum of its proper divisors (1).

87204529 is an equidigital number, since it uses as much as digits as its factorization.

87204529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 87204529 is about 9338.3365221007. The cubic root of 87204529 is about 443.4517232702.

The spelling of 87204529 in words is "eighty-seven million, two hundred four thousand, five hundred twenty-nine".