91633042 has 4 divisors (see below), whose sum is σ = 137449566. Its totient is φ = 45816520.

The previous prime is 91633037. The next prime is 91633051. The reversal of 91633042 is 24033619.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 74666881 + 16966161 = 8641^2 + 4119^2 .

It is a super-2 number, since 2×91633042² = 16793228772347528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91633042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22908259 + ... + 22908262.

Almost surely, 2^91633042 is an apocalyptic number.

91633042 is a deficient number, since it is larger than the sum of its proper divisors (45816524).

91633042 is a wasteful number, since it uses less digits than its factorization.

91633042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45816523.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 91633042 is about 9572.5149255564. The cubic root of 91633042 is about 450.8347337691.

The spelling of 91633042 in words is "ninety-one million, six hundred thirty-three thousand, forty-two".