91223054 has 32 divisors (see below), whose sum is σ = 157036320. Its totient is φ = 39370752.

The previous prime is 91223051. The next prime is 91223159. The reversal of 91223054 is 45032219.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91223051) 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, 78542 + ... + 79694.

It is an arithmetic number, because the mean of its divisors is an integer number (4907385).

Almost surely, 2^91223054 is an apocalyptic number.

91223054 is a deficient number, since it is larger than the sum of its proper divisors (65813266).

91223054 is a wasteful number, since it uses less digits than its factorization.

91223054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 91223054 is about 9551.0760650306. The cubic root of 91223054 is about 450.1613479030.

The spelling of 91223054 in words is "ninety-one million, two hundred twenty-three thousand, fifty-four".