530136621 has 12 divisors (see below), whose sum is σ = 875146272. Its totient is φ = 302935176.

The previous prime is 530136587. The next prime is 530136643. The reversal of 530136621 is 126631035.

530136621 is a `hidden beast` number, since 5 + 3 + 0 + 1 + 36 + 621 = 666.

It is not a de Polignac number, because 530136621 - 2⁶ = 530136557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530132621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4207371 + ... + 4207496.

It is an arithmetic number, because the mean of its divisors is an integer number (72928856).

Almost surely, 2^530136621 is an apocalyptic number.

It is an amenable number.

530136621 is a deficient number, since it is larger than the sum of its proper divisors (345009651).

530136621 is a wasteful number, since it uses less digits than its factorization.

530136621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8414880 (or 8414877 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 530136621 is about 23024.6958937572. The cubic root of 530136621 is about 809.3367638969.

Adding to 530136621 its reverse (126631035), we get a palindrome (656767656).

The spelling of 530136621 in words is "five hundred thirty million, one hundred thirty-six thousand, six hundred twenty-one".