91948554 has 16 divisors (see below), whose sum is σ = 204330240. Its totient is φ = 30649500.

The previous prime is 91948553. The next prime is 91948567. The reversal of 91948554 is 45584919.

91948554 is a `hidden beast` number, since 9 + 1 + 94 + 8 + 554 = 666.

It is not an unprimeable number, because it can be changed into a prime (91948553) 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, 851322 + ... + 851429.

It is an arithmetic number, because the mean of its divisors is an integer number (12770640).

Almost surely, 2^91948554 is an apocalyptic number.

91948554 is an abundant number, since it is smaller than the sum of its proper divisors (112381686).

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

91948554 is a wasteful number, since it uses less digits than its factorization.

91948554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702762 (or 1702756 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 91948554 is about 9588.9808634703. The cubic root of 91948554 is about 451.3515808893.

Subtracting from 91948554 its reverse (45584919), we obtain a triangular number (46363635 = T₉₆₂₉).

The spelling of 91948554 in words is "ninety-one million, nine hundred forty-eight thousand, five hundred fifty-four".