90002137 has 2 divisors, whose sum is σ = 90002138. Its totient is φ = 90002136.

The previous prime is 90002117. The next prime is 90002141. The reversal of 90002137 is 73120009.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48734361 + 41267776 = 6981^2 + 6424^2 .

It is a cyclic number.

It is not a de Polignac number, because 90002137 - 2¹¹ = 90000089 is a prime.

It is not a weakly prime, because it can be changed into another prime (90002117) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45001068 + 45001069.

It is an arithmetic number, because the mean of its divisors is an integer number (45001069).

Almost surely, 2^90002137 is an apocalyptic number.

It is an amenable number.

90002137 is a deficient number, since it is larger than the sum of its proper divisors (1).

90002137 is an equidigital number, since it uses as much as digits as its factorization.

90002137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 90002137 is about 9486.9456096259. The cubic root of 90002137 is about 448.1440215765.

The spelling of 90002137 in words is "ninety million, two thousand, one hundred thirty-seven".