87145033 has 2 divisors, whose sum is σ = 87145034. Its totient is φ = 87145032.

The previous prime is 87145021. The next prime is 87145067. The reversal of 87145033 is 33054178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81054009 + 6091024 = 9003^2 + 2468^2 .

It is a cyclic number.

It is not a de Polignac number, because 87145033 - 2²⁵ = 53590601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87144986 and 87145004.

It is not a weakly prime, because it can be changed into another prime (87145013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43572516 + 43572517.

It is an arithmetic number, because the mean of its divisors is an integer number (43572517).

Almost surely, 2^87145033 is an apocalyptic number.

It is an amenable number.

87145033 is a deficient number, since it is larger than the sum of its proper divisors (1).

87145033 is an equidigital number, since it uses as much as digits as its factorization.

87145033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 87145033 is about 9335.1504005024. The cubic root of 87145033 is about 443.3508508100.

The spelling of 87145033 in words is "eighty-seven million, one hundred forty-five thousand, thirty-three".