90333251 has 4 divisors (see below), whose sum is σ = 90381504. Its totient is φ = 90285000.

The previous prime is 90333241. The next prime is 90333263. The reversal of 90333251 is 15233309.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90333251 - 2¹⁴ = 90316867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90333251.

It is not an unprimeable number, because it can be changed into a prime (90333241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21200 + ... + 25101.

It is an arithmetic number, because the mean of its divisors is an integer number (22595376).

Almost surely, 2^90333251 is an apocalyptic number.

90333251 is a deficient number, since it is larger than the sum of its proper divisors (48253).

90333251 is a wasteful number, since it uses less digits than its factorization.

90333251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48252.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 90333251 is about 9504.3806215871. The cubic root of 90333251 is about 448.6929165472.

The spelling of 90333251 in words is "ninety million, three hundred thirty-three thousand, two hundred fifty-one".