91201506 has 32 divisors (see below), whose sum is σ = 199368000. Its totient is φ = 27583680.

The previous prime is 91201483. The next prime is 91201511. The reversal of 91201506 is 60510219.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45820 + ... + 47768.

It is an arithmetic number, because the mean of its divisors is an integer number (6230250).

Almost surely, 2^91201506 is an apocalyptic number.

91201506 is an abundant number, since it is smaller than the sum of its proper divisors (108166494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91201506 is a wasteful number, since it uses less digits than its factorization.

91201506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2674.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 91201506 is about 9549.9479579734. The cubic root of 91201506 is about 450.1259005748.

The spelling of 91201506 in words is "ninety-one million, two hundred one thousand, five hundred six".