506625403 has 4 divisors (see below), whose sum is σ = 507080080. Its totient is φ = 506170728.

The previous prime is 506625373. The next prime is 506625407. The reversal of 506625403 is 304526605.

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

It is a cyclic number.

It is not a de Polignac number, because 506625403 - 2²¹ = 504528251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506625407) 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, 225663 + ... + 227896.

It is an arithmetic number, because the mean of its divisors is an integer number (126770020).

Almost surely, 2^506625403 is an apocalyptic number.

506625403 is a deficient number, since it is larger than the sum of its proper divisors (454677).

506625403 is a wasteful number, since it uses less digits than its factorization.

506625403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454676.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 506625403 is about 22508.3407429335. The cubic root of 506625403 is about 797.1908783188.

It can be divided in two parts, 50662 and 5403, that added together give a palindrome (56065).

The spelling of 506625403 in words is "five hundred six million, six hundred twenty-five thousand, four hundred three".