53749478 has 16 divisors (see below), whose sum is σ = 85638384. Its totient is φ = 25213440.

The previous prime is 53749471. The next prime is 53749489. The reversal of 53749478 is 87494735.

53749478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53749471) 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 7 ways as a sum of consecutive naturals, for example, 9113 + ... + 13803.

It is an arithmetic number, because the mean of its divisors is an integer number (5352399).

Almost surely, 2^53749478 is an apocalyptic number.

53749478 is a deficient number, since it is larger than the sum of its proper divisors (31888906).

53749478 is a wasteful number, since it uses less digits than its factorization.

53749478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5047.

The product of its digits is 846720, while the sum is 47.

The square root of 53749478 is about 7331.4035491166. The cubic root of 53749478 is about 377.3908940132.

The spelling of 53749478 in words is "fifty-three million, seven hundred forty-nine thousand, four hundred seventy-eight".