91051854 has 16 divisors (see below), whose sum is σ = 182750592. Its totient is φ = 30242808.

The previous prime is 91051843. The next prime is 91051903. The reversal of 91051854 is 45815019.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25114 + ... + 28509.

It is an arithmetic number, because the mean of its divisors is an integer number (11421912).

Almost surely, 2^91051854 is an apocalyptic number.

91051854 is an abundant number, since it is smaller than the sum of its proper divisors (91698738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91051854 is a wasteful number, since it uses less digits than its factorization.

91051854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53911.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 91051854 is about 9542.1095151963. The cubic root of 91051854 is about 449.8795628310.

The spelling of 91051854 in words is "ninety-one million, fifty-one thousand, eight hundred fifty-four".