5157785 has 8 divisors (see below), whose sum is σ = 6209736. Its totient is φ = 4112640.

The previous prime is 5157743. The next prime is 5157787. The reversal of 5157785 is 5877515.

It can be written as a sum of positive squares in 4 ways, for example, as 1125721 + 4032064 = 1061^2 + 2008^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5157785 - 2¹² = 5153689 is a prime.

It is a super-2 number, since 2×5157785² = 53205492212450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5157787) 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 7 ways as a sum of consecutive naturals, for example, 155 + ... + 3215.

It is an arithmetic number, because the mean of its divisors is an integer number (776217).

Almost surely, 2^5157785 is an apocalyptic number.

It is an amenable number.

5157785 is a deficient number, since it is larger than the sum of its proper divisors (1051951).

5157785 is a wasteful number, since it uses less digits than its factorization.

5157785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403.

The product of its digits is 49000, while the sum is 38.

The square root of 5157785 is about 2271.0757362977. The cubic root of 5157785 is about 172.7777224832. Note that the first 4 decimals are identical.

The spelling of 5157785 in words is "five million, one hundred fifty-seven thousand, seven hundred eighty-five".