91151146 has 4 divisors (see below), whose sum is σ = 136726722. Its totient is φ = 45575572.

The previous prime is 91151119. The next prime is 91151153. The reversal of 91151146 is 64115119.

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., 89965225 + 1185921 = 9485^2 + 1089^2 .

It is a super-2 number, since 2×91151146² = 16617062834226632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22787785 + ... + 22787788.

Almost surely, 2^91151146 is an apocalyptic number.

91151146 is a deficient number, since it is larger than the sum of its proper divisors (45575576).

91151146 is a wasteful number, since it uses less digits than its factorization.

91151146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45575575.

The product of its digits is 1080, while the sum is 28.

The square root of 91151146 is about 9547.3109303091. The cubic root of 91151146 is about 450.0430345675.

The spelling of 91151146 in words is "ninety-one million, one hundred fifty-one thousand, one hundred forty-six".