91554879 has 8 divisors (see below), whose sum is σ = 131463472. Its totient is φ = 56341440.

The previous prime is 91554857. The next prime is 91554889. The reversal of 91554879 is 97845519.

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

It is not a de Polignac number, because 91554879 - 2¹⁵ = 91522111 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 (91554829) 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, 1173742 + ... + 1173819.

It is an arithmetic number, because the mean of its divisors is an integer number (16432934).

Almost surely, 2^91554879 is an apocalyptic number.

91554879 is a deficient number, since it is larger than the sum of its proper divisors (39908593).

91554879 is a wasteful number, since it uses less digits than its factorization.

91554879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347577.

The product of its digits is 453600, while the sum is 48.

The square root of 91554879 is about 9568.4313761452. The cubic root of 91554879 is about 450.7065099364.

The spelling of 91554879 in words is "ninety-one million, five hundred fifty-four thousand, eight hundred seventy-nine".