5129281 has 4 divisors (see below), whose sum is σ = 5134000. Its totient is φ = 5124564.

The previous prime is 5129279. The next prime is 5129303. The reversal of 5129281 is 1829215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5129281 - 2¹ = 5129279 is a prime.

It is a super-2 number, since 2×5129281² = 52619047153922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5129261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190 + ... + 3208.

It is an arithmetic number, because the mean of its divisors is an integer number (1283500).

Almost surely, 2^5129281 is an apocalyptic number.

It is an amenable number.

5129281 is a deficient number, since it is larger than the sum of its proper divisors (4719).

5129281 is a wasteful number, since it uses less digits than its factorization.

5129281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718.

The product of its digits is 1440, while the sum is 28.

The square root of 5129281 is about 2264.7916018919. The cubic root of 5129281 is about 172.4588545708.

It can be divided in two parts, 5 and 129281, that added together give a triangular number (129286 = T₅₀₈).

The spelling of 5129281 in words is "five million, one hundred twenty-nine thousand, two hundred eighty-one".