91348251 has 8 divisors (see below), whose sum is σ = 122429520. Its totient is φ = 60582912.

The previous prime is 91348241. The next prime is 91348261. The reversal of 91348251 is 15284319.

It is an interprime number because it is at equal distance from previous prime (91348241) and next prime (91348261).

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

It is not a de Polignac number, because 91348251 - 2¹³ = 91340059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91348241) 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, 78306 + ... + 79463.

It is an arithmetic number, because the mean of its divisors is an integer number (15303690).

Almost surely, 2^91348251 is an apocalyptic number.

91348251 is a deficient number, since it is larger than the sum of its proper divisors (31081269).

91348251 is a wasteful number, since it uses less digits than its factorization.

91348251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157965.

The product of its digits is 8640, while the sum is 33.

The square root of 91348251 is about 9557.6278960838. The cubic root of 91348251 is about 450.3671916549.

The spelling of 91348251 in words is "ninety-one million, three hundred forty-eight thousand, two hundred fifty-one".