53439750 has 320 divisors, whose sum is σ = 190270080. Its totient is φ = 10886400.

The previous prime is 53439733. The next prime is 53439751. The reversal of 53439750 is 5793435.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53439751) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1842736 + ... + 1842764.

It is an arithmetic number, because the mean of its divisors is an integer number (594594).

Almost surely, 2^53439750 is an apocalyptic number.

53439750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 53439750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95135040).

53439750 is an abundant number, since it is smaller than the sum of its proper divisors (136830330).

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

53439750 is a wasteful number, since it uses less digits than its factorization.

53439750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 53439750 is about 7310.2496537396. The cubic root of 53439750 is about 376.6646000182.

The spelling of 53439750 in words is "fifty-three million, four hundred thirty-nine thousand, seven hundred fifty".