90036251 has 2 divisors, whose sum is σ = 90036252. Its totient is φ = 90036250.

The previous prime is 90036223. The next prime is 90036299. The reversal of 90036251 is 15263009.

It is a weak prime.

It is an emirp because it is prime and its reverse (15263009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90036251 - 2⁶ = 90036187 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90036251.

It is not a weakly prime, because it can be changed into another prime (90036211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45018125 + 45018126.

It is an arithmetic number, because the mean of its divisors is an integer number (45018126).

Almost surely, 2^90036251 is an apocalyptic number.

90036251 is a deficient number, since it is larger than the sum of its proper divisors (1).

90036251 is an equidigital number, since it uses as much as digits as its factorization.

90036251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 90036251 is about 9488.7433836099. The cubic root of 90036251 is about 448.2006352471.

The spelling of 90036251 in words is "ninety million, thirty-six thousand, two hundred fifty-one".