91552197 has 8 divisors (see below), whose sum is σ = 133166880. Its totient is φ = 55486160.

The previous prime is 91552183. The next prime is 91552199. The reversal of 91552197 is 79125519.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91552197 - 2¹⁴ = 91535813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91552199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387122 + ... + 1387187.

It is an arithmetic number, because the mean of its divisors is an integer number (16645860).

Almost surely, 2^91552197 is an apocalyptic number.

It is an amenable number.

91552197 is a deficient number, since it is larger than the sum of its proper divisors (41614683).

91552197 is a wasteful number, since it uses less digits than its factorization.

91552197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774323.

The product of its digits is 28350, while the sum is 39.

The square root of 91552197 is about 9568.2912267552. The cubic root of 91552197 is about 450.7021089087.

The spelling of 91552197 in words is "ninety-one million, five hundred fifty-two thousand, one hundred ninety-seven".