507673321 has 2 divisors, whose sum is σ = 507673322. Its totient is φ = 507673320.

The previous prime is 507673307. The next prime is 507673343. The reversal of 507673321 is 123376705.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 488410000 + 19263321 = 22100^2 + 4389^2 .

It is a cyclic number.

It is not a de Polignac number, because 507673321 - 2¹⁹ = 507149033 is a prime.

It is not a weakly prime, because it can be changed into another prime (507673381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253836660 + 253836661.

It is an arithmetic number, because the mean of its divisors is an integer number (253836661).

Almost surely, 2^507673321 is an apocalyptic number.

It is an amenable number.

507673321 is a deficient number, since it is larger than the sum of its proper divisors (1).

507673321 is an equidigital number, since it uses as much as digits as its factorization.

507673321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 507673321 is about 22531.6071552830. The cubic root of 507673321 is about 797.7401436768.

The spelling of 507673321 in words is "five hundred seven million, six hundred seventy-three thousand, three hundred twenty-one".