53091738 has 96 divisors (see below), whose sum is σ = 140874240. Its totient is φ = 14113440.

The previous prime is 53091737. The next prime is 53091763. The reversal of 53091738 is 83719035.

53091738 is a `hidden beast` number, since 530 + 91 + 7 + 38 = 666.

53091738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (53091733) 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 47 ways as a sum of consecutive naturals, for example, 160233 + ... + 160563.

It is an arithmetic number, because the mean of its divisors is an integer number (1467440).

Almost surely, 2^53091738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53091738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70437120).

53091738 is an abundant number, since it is smaller than the sum of its proper divisors (87782502).

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

53091738 is a wasteful number, since it uses less digits than its factorization.

53091738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 53091738 is about 7286.4077569129. The cubic root of 53091738 is about 375.8451763740.

The spelling of 53091738 in words is "fifty-three million, ninety-one thousand, seven hundred thirty-eight".