537381 has 16 divisors (see below), whose sum is σ = 857920. Its totient is φ = 330480.

The previous prime is 537379. The next prime is 537401. The reversal of 537381 is 183735.

It is not a de Polignac number, because 537381 - 2¹ = 537379 is a prime.

It is a super-2 number, since 2×537381² = 577556678322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415 + ... + 1116.

It is an arithmetic number, because the mean of its divisors is an integer number (53620).

2⁵³⁷³⁸¹ is an apocalyptic number.

It is an amenable number.

537381 is a deficient number, since it is larger than the sum of its proper divisors (320539).

537381 is a wasteful number, since it uses less digits than its factorization.

537381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553 (or 1547 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 537381 is about 733.0627531119. The cubic root of 537381 is about 81.3006658352.

It can be divided in two parts, 53 and 7381, that multiplied together give a palindrome (391193).

The spelling of 537381 in words is "five hundred thirty-seven thousand, three hundred eighty-one".