507887321 has 2 divisors, whose sum is σ = 507887322. Its totient is φ = 507887320.

The previous prime is 507887297. The next prime is 507887323. The reversal of 507887321 is 123788705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 469198921 + 38688400 = 21661^2 + 6220^2 .

It is a cyclic number.

It is not a de Polignac number, because 507887321 - 2¹⁸ = 507625177 is a prime.

Together with 507887323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (507887323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253943660 + 253943661.

It is an arithmetic number, because the mean of its divisors is an integer number (253943661).

Almost surely, 2^507887321 is an apocalyptic number.

It is an amenable number.

507887321 is a deficient number, since it is larger than the sum of its proper divisors (1).

507887321 is an equidigital number, since it uses as much as digits as its factorization.

507887321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 507887321 is about 22536.3555394389. The cubic root of 507887321 is about 797.8522186418.

The spelling of 507887321 in words is "five hundred seven million, eight hundred eighty-seven thousand, three hundred twenty-one".