53726978 has 18 divisors (see below), whose sum is σ = 82876617. Its totient is φ = 26122320.

The previous prime is 53726971. The next prime is 53726989. The reversal of 53726978 is 87962735.

53726978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 53479969 + 247009 = 7313^2 + 497^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5183.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53726971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 735950 + ... + 736022.

Almost surely, 2^53726978 is an apocalyptic number.

53726978 is a deficient number, since it is larger than the sum of its proper divisors (29149639).

53726978 is an frugal number, since it uses more digits than its factorization.

53726978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 146 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 53726978 is about 7329.8688937798. The cubic root of 53726978 is about 377.3382269576.

The spelling of 53726978 in words is "fifty-three million, seven hundred twenty-six thousand, nine hundred seventy-eight".