5131512 has 40 divisors (see below), whose sum is σ = 14374800. Its totient is φ = 1710288.

The previous prime is 5131481. The next prime is 5131517. The reversal of 5131512 is 2151315.

5131512 is a `hidden beast` number, since 513 + 151 + 2 = 666.

It is a super-2 number, since 2×5131512² = 52664830812288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131517) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3312 + ... + 4607.

It is an arithmetic number, because the mean of its divisors is an integer number (359370).

Almost surely, 2^5131512 is an apocalyptic number.

It is an amenable number.

5131512 is an abundant number, since it is smaller than the sum of its proper divisors (9243288).

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

5131512 is a wasteful number, since it uses less digits than its factorization.

5131512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7937 (or 7924 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 5131512 is about 2265.2840881444. The cubic root of 5131512 is about 172.4838548216.

Adding to 5131512 its reverse (2151315), we get a palindrome (7282827).

It can be divided in two parts, 513 and 1512, that added together give a square (2025 = 45²).

The spelling of 5131512 in words is "five million, one hundred thirty-one thousand, five hundred twelve".