90250357 has 4 divisors (see below), whose sum is σ = 90312300. Its totient is φ = 90188416.

The previous prime is 90250339. The next prime is 90250373. The reversal of 90250357 is 75305209.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43546801 + 46703556 = 6599^2 + 6834^2 .

It is a cyclic number.

It is not a de Polignac number, because 90250357 - 2¹⁹ = 89726069 is a prime.

It is a super-3 number, since 3×90250357³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90250757) 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 in 3 ways as a sum of consecutive naturals, for example, 28732 + ... + 31717.

It is an arithmetic number, because the mean of its divisors is an integer number (22578075).

Almost surely, 2^90250357 is an apocalyptic number.

It is an amenable number.

90250357 is a deficient number, since it is larger than the sum of its proper divisors (61943).

90250357 is a wasteful number, since it uses less digits than its factorization.

90250357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61942.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 90250357 is about 9500.0187894551. The cubic root of 90250357 is about 448.5556273690. Note that the first 3 decimals are identical.

The spelling of 90250357 in words is "ninety million, two hundred fifty thousand, three hundred fifty-seven".