52071500 has 48 divisors (see below), whose sum is σ = 122487456. Its totient is φ = 19224000.

The previous prime is 52071499. The next prime is 52071511. The reversal of 52071500 is 517025.

It is a super-2 number, since 2×52071500² = 5422882224500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2495 + ... + 10505.

It is an arithmetic number, because the mean of its divisors is an integer number (2551822).

Almost surely, 2^52071500 is an apocalyptic number.

52071500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52071500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61243728).

52071500 is an abundant number, since it is smaller than the sum of its proper divisors (70415956).

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

52071500 is a wasteful number, since it uses less digits than its factorization.

52071500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8043 (or 8031 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 52071500 is about 7216.0584809160. The cubic root of 52071500 is about 373.4221107609.

Adding to 52071500 its reverse (517025), we get a palindrome (52588525).

The spelling of 52071500 in words is "fifty-two million, seventy-one thousand, five hundred".