54408091 has 2 divisors, whose sum is σ = 54408092. Its totient is φ = 54408090.

The previous prime is 54408083. The next prime is 54408097. The reversal of 54408091 is 19080445.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54408091 - 2³ = 54408083 is a prime.

It is not a weakly prime, because it can be changed into another prime (54408097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27204045 + 27204046.

It is an arithmetic number, because the mean of its divisors is an integer number (27204046).

Almost surely, 2^54408091 is an apocalyptic number.

54408091 is a deficient number, since it is larger than the sum of its proper divisors (1).

54408091 is an equidigital number, since it uses as much as digits as its factorization.

54408091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 54408091 is about 7376.1840405456. The cubic root of 54408091 is about 378.9260791081.

It can be divided in two parts, 5440 and 8091, that added together give a palindrome (13531).

The spelling of 54408091 in words is "fifty-four million, four hundred eight thousand, ninety-one".