52731000 has 384 divisors, whose sum is σ = 218050560. Its totient is φ = 11664000.

The previous prime is 52730971. The next prime is 52731001. The reversal of 52731000 is 13725.

It is a super-2 number, since 2×52731000² = 5561116722000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52731001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1700985 + ... + 1701015.

It is an arithmetic number, because the mean of its divisors is an integer number (567840).

Almost surely, 2^52731000 is an apocalyptic number.

52731000 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 52731000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109025280).

52731000 is an abundant number, since it is smaller than the sum of its proper divisors (165319560).

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

52731000 is a wasteful number, since it uses less digits than its factorization.

52731000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 52731000 is about 7261.6113914200. The cubic root of 52731000 is about 374.9919998293.

Adding to 52731000 its reverse (13725), we get a palindrome (52744725).

The spelling of 52731000 in words is "fifty-two million, seven hundred thirty-one thousand".