90948751 has 4 divisors (see below), whose sum is σ = 90993600. Its totient is φ = 90903904.

The previous prime is 90948749. The next prime is 90948757. The reversal of 90948751 is 15784909.

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 90948751 - 2¹ = 90948749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90948698 and 90948707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90948757) 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, 19231 + ... + 23488.

It is an arithmetic number, because the mean of its divisors is an integer number (22748400).

Almost surely, 2^90948751 is an apocalyptic number.

90948751 is a deficient number, since it is larger than the sum of its proper divisors (44849).

90948751 is a wasteful number, since it uses less digits than its factorization.

90948751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44848.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 90948751 is about 9536.7054583855. The cubic root of 90948751 is about 449.7096909421.

The spelling of 90948751 in words is "ninety million, nine hundred forty-eight thousand, seven hundred fifty-one".