91241506 has 16 divisors (see below), whose sum is σ = 143208000. Its totient is φ = 43516528.

The previous prime is 91241503. The next prime is 91241509. The reversal of 91241506 is 60514219.

It is an interprime number because it is at equal distance from previous prime (91241503) and next prime (91241509).

It is not an unprimeable number, because it can be changed into a prime (91241503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15345 + ... + 20443.

It is an arithmetic number, because the mean of its divisors is an integer number (8950500).

Almost surely, 2^91241506 is an apocalyptic number.

91241506 is a deficient number, since it is larger than the sum of its proper divisors (51966494).

91241506 is a wasteful number, since it uses less digits than its factorization.

91241506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 91241506 is about 9552.0419806448. The cubic root of 91241506 is about 450.1916977500.

The spelling of 91241506 in words is "ninety-one million, two hundred forty-one thousand, five hundred six".