5601161605 has 16 divisors (see below), whose sum is σ = 7261576560. Its totient is φ = 4123012608.

The previous prime is 5601161591. The next prime is 5601161633. The reversal of 5601161605 is 5061611065.

It can be written as a sum of positive squares in 8 ways, for example, as 2796505924 + 2804655681 = 52882^2 + 52959^2 .

It is not a de Polignac number, because 5601161605 - 2⁷ = 5601161477 is a prime.

It is a super-2 number, since 2×5601161605² = 62746022650652352050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117310 + ... + 157999.

It is an arithmetic number, because the mean of its divisors is an integer number (453848535).

Almost surely, 2^5601161605 is an apocalyptic number.

It is an amenable number.

5601161605 is a deficient number, since it is larger than the sum of its proper divisors (1660414955).

5601161605 is a wasteful number, since it uses less digits than its factorization.

5601161605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275640.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 5601161605 is about 74840.9086329128. The cubic root of 5601161605 is about 1775.9307799641.

The spelling of 5601161605 in words is "five billion, six hundred one million, one hundred sixty-one thousand, six hundred five".