54991326 has 16 divisors (see below), whose sum is σ = 118443024. Its totient is φ = 16920384.

The previous prime is 54991309. The next prime is 54991333. The reversal of 54991326 is 62319945.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352431 + ... + 352586.

It is an arithmetic number, because the mean of its divisors is an integer number (7402689).

Almost surely, 2^54991326 is an apocalyptic number.

54991326 is an abundant number, since it is smaller than the sum of its proper divisors (63451698).

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

54991326 is a wasteful number, since it uses less digits than its factorization.

54991326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705035.

The product of its digits is 58320, while the sum is 39.

The square root of 54991326 is about 7415.6136630760. The cubic root of 54991326 is about 380.2752530192.

The spelling of 54991326 in words is "fifty-four million, nine hundred ninety-one thousand, three hundred twenty-six".