91352972 has 12 divisors (see below), whose sum is σ = 160573560. Its totient is φ = 45474816.

The previous prime is 91352957. The next prime is 91352977. The reversal of 91352972 is 27925319.

It is not an unprimeable number, because it can be changed into a prime (91352977) 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, 49397 + ... + 51212.

It is an arithmetic number, because the mean of its divisors is an integer number (13381130).

Almost surely, 2^91352972 is an apocalyptic number.

It is an amenable number.

91352972 is a deficient number, since it is larger than the sum of its proper divisors (69220588).

91352972 is a wasteful number, since it uses less digits than its factorization.

91352972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100840 (or 100838 counting only the distinct ones).

The product of its digits is 34020, while the sum is 38.

The square root of 91352972 is about 9557.8748684004. The cubic root of 91352972 is about 450.3749500479.

The spelling of 91352972 in words is "ninety-one million, three hundred fifty-two thousand, nine hundred seventy-two".