537561005 has 4 divisors (see below), whose sum is σ = 645073212. Its totient is φ = 430048800.

The previous prime is 537560999. The next prime is 537561041. The reversal of 537561005 is 500165735.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500165735 = 5 ⋅100033147.

It can be written as a sum of positive squares in 2 ways, for example, as 165148201 + 372412804 = 12851^2 + 19298^2 .

It is a de Polignac number, because none of the positive numbers 2^k-537561005 is a prime.

It is a super-2 number, since 2×537561005² = 577943668193220050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53756096 + ... + 53756105.

It is an arithmetic number, because the mean of its divisors is an integer number (161268303).

Almost surely, 2^537561005 is an apocalyptic number.

It is an amenable number.

537561005 is a deficient number, since it is larger than the sum of its proper divisors (107512207).

537561005 is a wasteful number, since it uses less digits than its factorization.

537561005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107512206.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 537561005 is about 23185.3618690759. The cubic root of 537561005 is about 813.0974250678.

The spelling of 537561005 in words is "five hundred thirty-seven million, five hundred sixty-one thousand, five".