5131765 has 8 divisors (see below), whose sum is σ = 6308568. Its totient is φ = 4005120.

The previous prime is 5131759. The next prime is 5131781. The reversal of 5131765 is 5671315.

It can be written as a sum of positive squares in 4 ways, for example, as 194481 + 4937284 = 441^2 + 2222^2 .

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

It is not a de Polignac number, because 5131765 - 2³ = 5131757 is a prime.

It is a super-3 number, since 3×5131765³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

5131765 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12312 + ... + 12721.

It is an arithmetic number, because the mean of its divisors is an integer number (788571).

Almost surely, 2^5131765 is an apocalyptic number.

It is an amenable number.

5131765 is a deficient number, since it is larger than the sum of its proper divisors (1176803).

5131765 is a wasteful number, since it uses less digits than its factorization.

5131765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25079.

The product of its digits is 3150, while the sum is 28.

The square root of 5131765 is about 2265.3399303416. The cubic root of 5131765 is about 172.4866894441.

It can be divided in two parts, 513 and 1765, that added together give a triangular number (2278 = T₆₇).

The spelling of 5131765 in words is "five million, one hundred thirty-one thousand, seven hundred sixty-five".