5161638 has 16 divisors (see below), whose sum is σ = 10365696. Its totient is φ = 1713480.

The previous prime is 5161631. The next prime is 5161643. The reversal of 5161638 is 8361615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5161631) 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 7 ways as a sum of consecutive naturals, for example, 58 + ... + 3213.

It is an arithmetic number, because the mean of its divisors is an integer number (647856).

Almost surely, 2^5161638 is an apocalyptic number.

5161638 is an abundant number, since it is smaller than the sum of its proper divisors (5204058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5161638 is a wasteful number, since it uses less digits than its factorization.

5161638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3539.

The product of its digits is 4320, while the sum is 30.

The square root of 5161638 is about 2271.9238543578. The cubic root of 5161638 is about 172.8207349304.

The spelling of 5161638 in words is "five million, one hundred sixty-one thousand, six hundred thirty-eight".