53318538 has 96 divisors (see below), whose sum is σ = 145681536. Its totient is φ = 13716864.

The previous prime is 53318519. The next prime is 53318557. The reversal of 53318538 is 83581335.

53318538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (53318519) and next prime (53318557).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 70056 + ... + 70812.

It is an arithmetic number, because the mean of its divisors is an integer number (1517516).

Almost surely, 2^53318538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53318538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72840768).

53318538 is an abundant number, since it is smaller than the sum of its proper divisors (92362998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53318538 is a wasteful number, since it uses less digits than its factorization.

53318538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828 (or 825 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 53318538 is about 7301.9543959135. The cubic root of 53318538 is about 376.3796009789.

The spelling of 53318538 in words is "fifty-three million, three hundred eighteen thousand, five hundred thirty-eight".