91906151 has 8 divisors (see below), whose sum is σ = 93487680. Its totient is φ = 90335232.

The previous prime is 91906147. The next prime is 91906169. The reversal of 91906151 is 15160919.

It is a happy number.

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 91906151 - 2² = 91906147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91906141) 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, 15911 + ... + 20903.

It is an arithmetic number, because the mean of its divisors is an integer number (11685960).

Almost surely, 2^91906151 is an apocalyptic number.

91906151 is a deficient number, since it is larger than the sum of its proper divisors (1581529).

91906151 is a wasteful number, since it uses less digits than its factorization.

91906151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305.

The product of its (nonzero) digits is 2430, while the sum is 32.

The square root of 91906151 is about 9586.7695810424. The cubic root of 91906151 is about 451.2821884483.

The spelling of 91906151 in words is "ninety-one million, nine hundred six thousand, one hundred fifty-one".