537540 has 72 divisors (see below), whose sum is σ = 1650432. Its totient is φ = 130560.

The previous prime is 537527. The next prime is 537547. The reversal of 537540 is 45735.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 537540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537547) by changing a digit.

537540 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17325 + ... + 17355.

2⁵³⁷⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 537540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (825216).

537540 is an abundant number, since it is smaller than the sum of its proper divisors (1112892).

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

537540 is a wasteful number, since it uses less digits than its factorization.

537540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 537540 is about 733.1711941968. The cubic root of 537540 is about 81.3086834435.

The spelling of 537540 in words is "five hundred thirty-seven thousand, five hundred forty".