90244157 has 16 divisors (see below), whose sum is σ = 97711488. Its totient is φ = 83128320.

The previous prime is 90244153. The next prime is 90244159. The reversal of 90244157 is 75144209.

It is a happy number.

It is not a de Polignac number, because 90244157 - 2² = 90244153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90244153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77693 + ... + 78845.

It is an arithmetic number, because the mean of its divisors is an integer number (6106968).

Almost surely, 2^90244157 is an apocalyptic number.

It is an amenable number.

90244157 is a deficient number, since it is larger than the sum of its proper divisors (7467331).

90244157 is a wasteful number, since it uses less digits than its factorization.

90244157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 90244157 is about 9499.6924687066. The cubic root of 90244157 is about 448.5453555405.

The spelling of 90244157 in words is "ninety million, two hundred forty-four thousand, one hundred fifty-seven".