5361581 has 4 divisors (see below), whose sum is σ = 5375100. Its totient is φ = 5348064.

The previous prime is 5361571. The next prime is 5361593. The reversal of 5361581 is 1851635.

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 3648100 + 1713481 = 1910^2 + 1309^2 .

It is a cyclic number.

It is not a de Polignac number, because 5361581 - 2¹⁰ = 5360557 is a prime.

It is a super-2 number, since 2×5361581² = 57493101639122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5361571) 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, 6146 + ... + 6963.

It is an arithmetic number, because the mean of its divisors is an integer number (1343775).

Almost surely, 2^5361581 is an apocalyptic number.

It is an amenable number.

5361581 is a deficient number, since it is larger than the sum of its proper divisors (13519).

5361581 is a wasteful number, since it uses less digits than its factorization.

5361581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13518.

The product of its digits is 3600, while the sum is 29.

The square root of 5361581 is about 2315.5087993787. The cubic root of 5361581 is about 175.0240075907.

The spelling of 5361581 in words is "five million, three hundred sixty-one thousand, five hundred eighty-one".