5157665 has 4 divisors (see below), whose sum is σ = 6189204. Its totient is φ = 4126128.

The previous prime is 5157661. The next prime is 5157709. The reversal of 5157665 is 5667515.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 868624 + 4289041 = 932^2 + 2071^2 .

It is a cyclic number.

It is not a de Polignac number, because 5157665 - 2² = 5157661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5157661) 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 3 ways as a sum of consecutive naturals, for example, 515762 + ... + 515771.

It is an arithmetic number, because the mean of its divisors is an integer number (1547301).

Almost surely, 2^5157665 is an apocalyptic number.

It is an amenable number.

5157665 is a deficient number, since it is larger than the sum of its proper divisors (1031539).

5157665 is a wasteful number, since it uses less digits than its factorization.

5157665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031538.

The product of its digits is 31500, while the sum is 35.

The square root of 5157665 is about 2271.0493169458. The cubic root of 5157665 is about 172.7763825354.

The spelling of 5157665 in words is "five million, one hundred fifty-seven thousand, six hundred sixty-five".