53972730 has 192 divisors, whose sum is σ = 176117760. Its totient is φ = 11617344.

The previous prime is 53972707. The next prime is 53972731. The reversal of 53972730 is 3727935.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (53972731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 323107 + ... + 323273.

It is an arithmetic number, because the mean of its divisors is an integer number (917280).

Almost surely, 2^53972730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53972730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88058880).

53972730 is an abundant number, since it is smaller than the sum of its proper divisors (122145030).

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

53972730 is a wasteful number, since it uses less digits than its factorization.

53972730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 53972730 is about 7346.6135055548. The cubic root of 53972730 is about 377.9126782421.

The spelling of 53972730 in words is "fifty-three million, nine hundred seventy-two thousand, seven hundred thirty".