91511054 has 4 divisors (see below), whose sum is σ = 137266584. Its totient is φ = 45755526.

The previous prime is 91511047. The next prime is 91511093. The reversal of 91511054 is 45011519.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22877762 + ... + 22877765.

It is an arithmetic number, because the mean of its divisors is an integer number (34316646).

Almost surely, 2^91511054 is an apocalyptic number.

91511054 is a deficient number, since it is larger than the sum of its proper divisors (45755530).

91511054 is a wasteful number, since it uses less digits than its factorization.

91511054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45755529.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 91511054 is about 9566.1410192407. The cubic root of 91511054 is about 450.6345845313.

The spelling of 91511054 in words is "ninety-one million, five hundred eleven thousand, fifty-four".