5161555 has 16 divisors (see below), whose sum is σ = 7162560. Its totient is φ = 3497472.

The previous prime is 5161553. The next prime is 5161561. The reversal of 5161555 is 5551615.

5161555 = 925² + 926² + ... + 930².

It is a cyclic number.

It is not a de Polignac number, because 5161555 - 2¹ = 5161553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5161553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2287 + ... + 3943.

It is an arithmetic number, because the mean of its divisors is an integer number (447660).

Almost surely, 2^5161555 is an apocalyptic number.

5161555 is a deficient number, since it is larger than the sum of its proper divisors (2001005).

5161555 is a wasteful number, since it uses less digits than its factorization.

5161555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758.

The product of its digits is 3750, while the sum is 28.

The square root of 5161555 is about 2271.9055878271. The cubic root of 5161555 is about 172.8198085967.

The spelling of 5161555 in words is "five million, one hundred sixty-one thousand, five hundred fifty-five".