54891045 has 72 divisors (see below), whose sum is σ = 110918808. Its totient is φ = 25006080.

The previous prime is 54891043. The next prime is 54891047. The reversal of 54891045 is 54019845.

54891045 is a `hidden beast` number, since 548 + 9 + 104 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (54891043) and next prime (54891047).

It can be written as a sum of positive squares in 4 ways, for example, as 13905441 + 40985604 = 3729^2 + 6402^2 .

It is not a de Polignac number, because 54891045 - 2¹ = 54891043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54891043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 92269 + ... + 92861.

It is an arithmetic number, because the mean of its divisors is an integer number (1540539).

Almost surely, 2^54891045 is an apocalyptic number.

54891045 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54891045 is an abundant number, since it is smaller than the sum of its proper divisors (56027763).

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

54891045 is a wasteful number, since it uses less digits than its factorization.

54891045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 54891045 is about 7408.8491009063. The cubic root of 54891045 is about 380.0439584419.

The spelling of 54891045 in words is "fifty-four million, eight hundred ninety-one thousand, forty-five".