54921757 has 8 divisors (see below), whose sum is σ = 60179040. Its totient is φ = 49708560.

The previous prime is 54921733. The next prime is 54921767. The reversal of 54921757 is 75712945.

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

It is not a de Polignac number, because 54921757 - 2¹⁵ = 54888989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54921767) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 8383 + ... + 13420.

It is an arithmetic number, because the mean of its divisors is an integer number (7522380).

Almost surely, 2^54921757 is an apocalyptic number.

It is an amenable number.

54921757 is a deficient number, since it is larger than the sum of its proper divisors (5257283).

54921757 is a wasteful number, since it uses less digits than its factorization.

54921757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22043.

The product of its digits is 88200, while the sum is 40.

The square root of 54921757 is about 7410.9214676719. The cubic root of 54921757 is about 380.1148244875.

The spelling of 54921757 in words is "fifty-four million, nine hundred twenty-one thousand, seven hundred fifty-seven".