54446991 has 8 divisors (see below), whose sum is σ = 72710784. Its totient is φ = 36240600.

The previous prime is 54446983. The next prime is 54446993. The reversal of 54446991 is 19964445.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54446991 - 2³ = 54446983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54446993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12085 + ... + 15966.

It is an arithmetic number, because the mean of its divisors is an integer number (9088848).

Almost surely, 2^54446991 is an apocalyptic number.

54446991 is a deficient number, since it is larger than the sum of its proper divisors (18263793).

54446991 is a wasteful number, since it uses less digits than its factorization.

54446991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28701.

The product of its digits is 155520, while the sum is 42.

The square root of 54446991 is about 7378.8204341887. The cubic root of 54446991 is about 379.0163641660.

The spelling of 54446991 in words is "fifty-four million, four hundred forty-six thousand, nine hundred ninety-one".