54220685 has 8 divisors (see below), whose sum is σ = 65106936. Its totient is φ = 43348480.

The previous prime is 54220681. The next prime is 54220687. The reversal of 54220685 is 58602245.

It can be written as a sum of positive squares in 4 ways, for example, as 5597956 + 48622729 = 2366^2 + 6973^2 .

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

It is not a de Polignac number, because 54220685 - 2² = 54220681 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54220681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9125 + ... + 13845.

It is an arithmetic number, because the mean of its divisors is an integer number (8138367).

Almost surely, 2^54220685 is an apocalyptic number.

It is an amenable number.

54220685 is a deficient number, since it is larger than the sum of its proper divisors (10886251).

54220685 is a wasteful number, since it uses less digits than its factorization.

54220685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7023.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 54220685 is about 7363.4696305478. The cubic root of 54220685 is about 378.4905145350.

The spelling of 54220685 in words is "fifty-four million, two hundred twenty thousand, six hundred eighty-five".