52721071000 has 192 divisors, whose sum is σ = 134505614880. Its totient is φ = 19332518400.

The previous prime is 52721070989. The next prime is 52721071001. The reversal of 52721071000 is 17012725.

It is a happy number.

52721071000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×52721071000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52721071001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26532007 + ... + 26533993.

Almost surely, 2^52721071000 is an apocalyptic number.

52721071000 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 52721071000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67252807440).

52721071000 is an abundant number, since it is smaller than the sum of its proper divisors (81784543880).

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

52721071000 is a wasteful number, since it uses less digits than its factorization.

52721071000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191 (or 2164 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

Adding to 52721071000 its reverse (17012725), we get a palindrome (52738083725).

The spelling of 52721071000 in words is "fifty-two billion, seven hundred twenty-one million, seventy-one thousand".