91415054 has 4 divisors (see below), whose sum is σ = 137122584. Its totient is φ = 45707526.

The previous prime is 91415017. The next prime is 91415057. The reversal of 91415054 is 45051419.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45051419 = 7 ⋅6435917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91415057) by changing a digit.

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, 22853762 + ... + 22853765.

It is an arithmetic number, because the mean of its divisors is an integer number (34280646).

Almost surely, 2^91415054 is an apocalyptic number.

91415054 is a deficient number, since it is larger than the sum of its proper divisors (45707530).

91415054 is a wasteful number, since it uses less digits than its factorization.

91415054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45707529.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 91415054 is about 9561.1220052879. The cubic root of 91415054 is about 450.4769494526.

Subtracting from 91415054 its reverse (45051419), we obtain a triangular number (46363635 = T₉₆₂₉).

The spelling of 91415054 in words is "ninety-one million, four hundred fifteen thousand, fifty-four".