537244221 has 8 divisors (see below), whose sum is σ = 718969984. Its totient is φ = 356840640.

The previous prime is 537244219. The next prime is 537244237. The reversal of 537244221 is 122442735.

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

It is not a de Polignac number, because 537244221 - 2¹ = 537244219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537244271) 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, 329596 + ... + 331221.

It is an arithmetic number, because the mean of its divisors is an integer number (89871248).

Almost surely, 2^537244221 is an apocalyptic number.

It is an amenable number.

537244221 is a deficient number, since it is larger than the sum of its proper divisors (181725763).

537244221 is a wasteful number, since it uses less digits than its factorization.

537244221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661091.

The product of its digits is 13440, while the sum is 30.

The square root of 537244221 is about 23178.5293105495. The cubic root of 537244221 is about 812.9376745990.

Adding to 537244221 its reverse (122442735), we get a palindrome (659686956).

The spelling of 537244221 in words is "five hundred thirty-seven million, two hundred forty-four thousand, two hundred twenty-one".