5135661 has 12 divisors (see below), whose sum is σ = 7469280. Its totient is φ = 3400200.

The previous prime is 5135659. The next prime is 5135671. The reversal of 5135661 is 1665315.

It is a happy number.

It is not a de Polignac number, because 5135661 - 2¹ = 5135659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5135621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 531 + ... + 3248.

It is an arithmetic number, because the mean of its divisors is an integer number (622440).

Almost surely, 2^5135661 is an apocalyptic number.

It is an amenable number.

5135661 is a deficient number, since it is larger than the sum of its proper divisors (2333619).

5135661 is a wasteful number, since it uses less digits than its factorization.

5135661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936 (or 3933 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 5135661 is about 2266.1996822875. The cubic root of 5135661 is about 172.5303286308.

The spelling of 5135661 in words is "five million, one hundred thirty-five thousand, six hundred sixty-one".