90083251 has 4 divisors (see below), whose sum is σ = 93189600. Its totient is φ = 86976904.

The previous prime is 90083243. The next prime is 90083263. The reversal of 90083251 is 15238009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15238009 = 1481 ⋅10289.

It is a cyclic number.

It is not a de Polignac number, because 90083251 - 2³ = 90083243 is a prime.

It is a super-2 number, since 2×90083251² = 16229984221458002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90083291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1553131 + ... + 1553188.

It is an arithmetic number, because the mean of its divisors is an integer number (23297400).

Almost surely, 2^90083251 is an apocalyptic number.

90083251 is a deficient number, since it is larger than the sum of its proper divisors (3106349).

90083251 is a wasteful number, since it uses less digits than its factorization.

90083251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106348.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 90083251 is about 9491.2196792615. The cubic root of 90083251 is about 448.2786103782.

The spelling of 90083251 in words is "ninety million, eighty-three thousand, two hundred fifty-one".