53731000 has 32 divisors (see below), whose sum is σ = 125732880. Its totient is φ = 21492000.

The previous prime is 53730983. The next prime is 53731001. The reversal of 53731000 is 13735.

It is a super-2 number, since 2×53731000² = 5774040722000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53731001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25866 + ... + 27865.

Almost surely, 2^53731000 is an apocalyptic number.

53731000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53731000 is an abundant number, since it is smaller than the sum of its proper divisors (72001880).

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

53731000 is a wasteful number, since it uses less digits than its factorization.

53731000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53752 (or 53738 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 19.

The square root of 53731000 is about 7330.1432455307. The cubic root of 53731000 is about 377.3476425655.

Adding to 53731000 its reverse (13735), we get a palindrome (53744735).

The spelling of 53731000 in words is "fifty-three million, seven hundred thirty-one thousand".