91773141 has 4 divisors (see below), whose sum is σ = 122364192. Its totient is φ = 61182092.

The previous prime is 91773133. The next prime is 91773161. The reversal of 91773141 is 14137719.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91773141 - 2³ = 91773133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91773161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15295521 + ... + 15295526.

It is an arithmetic number, because the mean of its divisors is an integer number (30591048).

Almost surely, 2^91773141 is an apocalyptic number.

It is an amenable number.

91773141 is a deficient number, since it is larger than the sum of its proper divisors (30591051).

91773141 is a wasteful number, since it uses less digits than its factorization.

91773141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30591050.

The product of its digits is 5292, while the sum is 33.

The square root of 91773141 is about 9579.8299045442. The cubic root of 91773141 is about 451.0643792180.

The spelling of 91773141 in words is "ninety-one million, seven hundred seventy-three thousand, one hundred forty-one".