90051973 has 8 divisors (see below), whose sum is σ = 99193536. Its totient is φ = 81069600.

The previous prime is 90051961. The next prime is 90051977. The reversal of 90051973 is 37915009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90051973 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 (90051977) 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 7 ways as a sum of consecutive naturals, for example, 38608 + ... + 40873.

It is an arithmetic number, because the mean of its divisors is an integer number (12399192).

Almost surely, 2^90051973 is an apocalyptic number.

It is an amenable number.

90051973 is a deficient number, since it is larger than the sum of its proper divisors (9141563).

90051973 is a wasteful number, since it uses less digits than its factorization.

90051973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79595.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 90051973 is about 9489.5718027738. The cubic root of 90051973 is about 448.2267217777.

The spelling of 90051973 in words is "ninety million, fifty-one thousand, nine hundred seventy-three".