54891147 has 16 divisors (see below), whose sum is σ = 77738400. Its totient is φ = 34332672.

The previous prime is 54891143. The next prime is 54891163. The reversal of 54891147 is 74119845.

It is not a de Polignac number, because 54891147 - 2² = 54891143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54891143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16479 + ... + 19527.

It is an arithmetic number, because the mean of its divisors is an integer number (4858650).

Almost surely, 2^54891147 is an apocalyptic number.

54891147 is a deficient number, since it is larger than the sum of its proper divisors (22847253).

54891147 is a wasteful number, since it uses less digits than its factorization.

54891147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422.

The product of its digits is 40320, while the sum is 39.

The square root of 54891147 is about 7408.8559845633. The cubic root of 54891147 is about 380.0441938444.

The spelling of 54891147 in words is "fifty-four million, eight hundred ninety-one thousand, one hundred forty-seven".