52973730 has 64 divisors (see below), whose sum is σ = 145843200. Its totient is φ = 13668480.

The previous prime is 52973719. The next prime is 52973731. The reversal of 52973730 is 3737925.

It is a happy number.

It is a super-2 number, since 2×52973730² = 5612432140225800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52973731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5206 + ... + 11534.

It is an arithmetic number, because the mean of its divisors is an integer number (2278800).

Almost surely, 2^52973730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52973730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72921600).

52973730 is an abundant number, since it is smaller than the sum of its proper divisors (92869470).

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

52973730 is a wasteful number, since it uses less digits than its factorization.

52973730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6376 (or 6370 counting only the distinct ones).

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

The square root of 52973730 is about 7278.3054346462. The cubic root of 52973730 is about 375.5665037650.

The spelling of 52973730 in words is "fifty-two million, nine hundred seventy-three thousand, seven hundred thirty".