5601611531 has 2 divisors, whose sum is σ = 5601611532. Its totient is φ = 5601611530.

The previous prime is 5601611513. The next prime is 5601611549. The reversal of 5601611531 is 1351161065.

Together with previous prime (5601611513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (5601611513) and next prime (5601611549).

It is a cyclic number.

It is not a de Polignac number, because 5601611531 - 2⁶ = 5601611467 is a prime.

It is a super-2 number, since 2×5601611531² = 62756103488464327922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5601611494 and 5601611503.

It is not a weakly prime, because it can be changed into another prime (5601617531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2800805765 + 2800805766.

It is an arithmetic number, because the mean of its divisors is an integer number (2800805766).

Almost surely, 2^5601611531 is an apocalyptic number.

5601611531 is a deficient number, since it is larger than the sum of its proper divisors (1).

5601611531 is an equidigital number, since it uses as much as digits as its factorization.

5601611531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 5601611531 is about 74843.9144553517. The cubic root of 5601611531 is about 1775.9783305791.

Adding to 5601611531 its reverse (1351161065), we get a palindrome (6952772596).

The spelling of 5601611531 in words is "five billion, six hundred one million, six hundred eleven thousand, five hundred thirty-one".