90963571 has 4 divisors (see below), whose sum is σ = 90984600. Its totient is φ = 90942544.

The previous prime is 90963569. The next prime is 90963581. The reversal of 90963571 is 17536909.

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 90963571 - 2¹ = 90963569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90963581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381 + ... + 13558.

It is an arithmetic number, because the mean of its divisors is an integer number (22746150).

Almost surely, 2^90963571 is an apocalyptic number.

90963571 is a deficient number, since it is larger than the sum of its proper divisors (21029).

90963571 is a wasteful number, since it uses less digits than its factorization.

90963571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21028.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 90963571 is about 9537.4824246234. The cubic root of 90963571 is about 449.7341161837.

The spelling of 90963571 in words is "ninety million, nine hundred sixty-three thousand, five hundred seventy-one".