507421 has 2 divisors, whose sum is σ = 507422. Its totient is φ = 507420.

The previous prime is 507401. The next prime is 507431. The reversal of 507421 is 124705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343396 + 164025 = 586^2 + 405^2 .

It is a cyclic number.

It is not a de Polignac number, because 507421 - 2¹³ = 499229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (507401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253710 + 253711.

It is an arithmetic number, because the mean of its divisors is an integer number (253711).

2⁵⁰⁷⁴²¹ is an apocalyptic number.

It is an amenable number.

507421 is a deficient number, since it is larger than the sum of its proper divisors (1).

507421 is an equidigital number, since it uses as much as digits as its factorization.

507421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 507421 is about 712.3348931507. The cubic root of 507421 is about 79.7607958970.

The spelling of 507421 in words is "five hundred seven thousand, four hundred twenty-one".