530640751 has 4 divisors (see below), whose sum is σ = 553712112. Its totient is φ = 507569392.

The previous prime is 530640739. The next prime is 530640757. The reversal of 530640751 is 157046035.

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 530640751 - 2⁷ = 530640623 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530640757) 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, 11535646 + ... + 11535691.

It is an arithmetic number, because the mean of its divisors is an integer number (138428028).

Almost surely, 2^530640751 is an apocalyptic number.

530640751 is a deficient number, since it is larger than the sum of its proper divisors (23071361).

530640751 is a wasteful number, since it uses less digits than its factorization.

530640751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23071360.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 530640751 is about 23035.6408853759. The cubic root of 530640751 is about 809.5932271450.

Adding to 530640751 its reverse (157046035), we get a palindrome (687686786).

The spelling of 530640751 in words is "five hundred thirty million, six hundred forty thousand, seven hundred fifty-one".