537313261 has 4 divisors (see below), whose sum is σ = 540419292. Its totient is φ = 534207232.

The previous prime is 537313253. The next prime is 537313277. The reversal of 537313261 is 162313735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 444788100 + 92525161 = 21090^2 + 9619^2 .

It is a cyclic number.

It is not a de Polignac number, because 537313261 - 2³ = 537313253 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 (537313961) 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, 1552756 + ... + 1553101.

It is an arithmetic number, because the mean of its divisors is an integer number (135104823).

Almost surely, 2^537313261 is an apocalyptic number.

It is an amenable number.

537313261 is a deficient number, since it is larger than the sum of its proper divisors (3106031).

537313261 is a wasteful number, since it uses less digits than its factorization.

537313261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106030.

The product of its digits is 11340, while the sum is 31.

The square root of 537313261 is about 23180.0185720374. The cubic root of 537313261 is about 812.9724960147.

Adding to 537313261 its reverse (162313735), we get a palindrome (699626996).

The spelling of 537313261 in words is "five hundred thirty-seven million, three hundred thirteen thousand, two hundred sixty-one".