506265421 has 4 divisors (see below), whose sum is σ = 508093372. Its totient is φ = 504437472.

The previous prime is 506265379. The next prime is 506265451. The reversal of 506265421 is 124562605.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65853225 + 440412196 = 8115^2 + 20986^2 .

It is a cyclic number.

It is not a de Polignac number, because 506265421 - 2⁹ = 506264909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506265451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913560 + ... + 914113.

It is an arithmetic number, because the mean of its divisors is an integer number (127023343).

Almost surely, 2^506265421 is an apocalyptic number.

It is an amenable number.

506265421 is a deficient number, since it is larger than the sum of its proper divisors (1827951).

506265421 is a wasteful number, since it uses less digits than its factorization.

506265421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827950.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 506265421 is about 22500.3426862792. The cubic root of 506265421 is about 797.0020192778.

The spelling of 506265421 in words is "five hundred six million, two hundred sixty-five thousand, four hundred twenty-one".