90451087 has 8 divisors (see below), whose sum is σ = 96589440. Its totient is φ = 84514080.

The previous prime is 90451079. The next prime is 90451093. The reversal of 90451087 is 78015409.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 90451087 - 2³ = 90451079 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 (90451057) 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, 49408 + ... + 51205.

It is an arithmetic number, because the mean of its divisors is an integer number (12073680).

Almost surely, 2^90451087 is an apocalyptic number.

90451087 is a deficient number, since it is larger than the sum of its proper divisors (6138353).

90451087 is a wasteful number, since it uses less digits than its factorization.

90451087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100673.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 90451087 is about 9510.5776375570. The cubic root of 90451087 is about 448.8879322427.

The spelling of 90451087 in words is "ninety million, four hundred fifty-one thousand, eighty-seven".