91794551 has 16 divisors (see below), whose sum is σ = 96484608. Its totient is φ = 87259200.

The previous prime is 91794539. The next prime is 91794553. The reversal of 91794551 is 15549719.

It is a cyclic number.

It is not a de Polignac number, because 91794551 - 2¹⁸ = 91532407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91794499 and 91794508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91794553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326531 + ... + 326811.

It is an arithmetic number, because the mean of its divisors is an integer number (6030288).

Almost surely, 2^91794551 is an apocalyptic number.

91794551 is a deficient number, since it is larger than the sum of its proper divisors (4690057).

91794551 is a wasteful number, since it uses less digits than its factorization.

91794551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502.

The product of its digits is 56700, while the sum is 41.

The square root of 91794551 is about 9580.9472913695. The cubic root of 91794551 is about 451.0994531600.

The spelling of 91794551 in words is "ninety-one million, seven hundred ninety-four thousand, five hundred fifty-one".