5728531 has 4 divisors (see below), whose sum is σ = 5743872. Its totient is φ = 5713192.

The previous prime is 5728523. The next prime is 5728543. The reversal of 5728531 is 1358275.

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

It is a cyclic number.

It is not a de Polignac number, because 5728531 - 2³ = 5728523 is a prime.

It is a super-2 number, since 2×5728531² = 65632134835922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5728493 and 5728502.

It is not an unprimeable number, because it can be changed into a prime (5728231) 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, 7096 + ... + 7861.

It is an arithmetic number, because the mean of its divisors is an integer number (1435968).

Almost surely, 2^5728531 is an apocalyptic number.

5728531 is a deficient number, since it is larger than the sum of its proper divisors (15341).

5728531 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 13 representation: 5728531 = (1257583)₁₃.

5728531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15340.

The product of its digits is 8400, while the sum is 31.

The square root of 5728531 is about 2393.4349792714. The cubic root of 5728531 is about 178.9291460365.

The spelling of 5728531 in words is "five million, seven hundred twenty-eight thousand, five hundred thirty-one".