537881 has 4 divisors (see below), whose sum is σ = 555264. Its totient is φ = 520500.

The previous prime is 537877. The next prime is 537883. The reversal of 537881 is 188735.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 188735 = 5 ⋅37747.

It is a cyclic number.

It is not a de Polignac number, because 537881 - 2² = 537877 is a prime.

It is a super-2 number, since 2×537881² = 578631940322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (537883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8645 + ... + 8706.

It is an arithmetic number, because the mean of its divisors is an integer number (138816).

2⁵³⁷⁸⁸¹ is an apocalyptic number.

It is an amenable number.

537881 is a deficient number, since it is larger than the sum of its proper divisors (17383).

537881 is a wasteful number, since it uses less digits than its factorization.

537881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17382.

The product of its digits is 6720, while the sum is 32.

The square root of 537881 is about 733.4037087444. The cubic root of 537881 is about 81.3258731101.

The spelling of 537881 in words is "five hundred thirty-seven thousand, eight hundred eighty-one".