537621 has 8 divisors (see below), whose sum is σ = 819264. Its totient is φ = 307200.

The previous prime is 537611. The next prime is 537637. The reversal of 537621 is 126735.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 537621 - 2¹¹ = 535573 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 537591 and 537600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12780 + ... + 12821.

It is an arithmetic number, because the mean of its divisors is an integer number (102408).

2⁵³⁷⁶²¹ is an apocalyptic number.

It is an amenable number.

537621 is a deficient number, since it is larger than the sum of its proper divisors (281643).

537621 is a wasteful number, since it uses less digits than its factorization.

537621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25611.

The product of its digits is 1260, while the sum is 24.

The square root of 537621 is about 733.2264316021. The cubic root of 537621 is about 81.3127672776.

It can be divided in two parts, 5376 and 21, that multiplied together give a square (112896 = 336²).

The spelling of 537621 in words is "five hundred thirty-seven thousand, six hundred twenty-one".