54921782 has 4 divisors (see below), whose sum is σ = 82382676. Its totient is φ = 27460890.

The previous prime is 54921767. The next prime is 54921809. The reversal of 54921782 is 28712945.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 13730444 + ... + 13730447.

It is an arithmetic number, because the mean of its divisors is an integer number (20595669).

Almost surely, 2^54921782 is an apocalyptic number.

54921782 is a deficient number, since it is larger than the sum of its proper divisors (27460894).

54921782 is a wasteful number, since it uses less digits than its factorization.

54921782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27460893.

The product of its digits is 40320, while the sum is 38.

The square root of 54921782 is about 7410.9231543715. The cubic root of 54921782 is about 380.1148821627.

The spelling of 54921782 in words is "fifty-four million, nine hundred twenty-one thousand, seven hundred eighty-two".