506999957 has 2 divisors, whose sum is σ = 506999958. Its totient is φ = 506999956.

The previous prime is 506999929. The next prime is 507000001. The reversal of 506999957 is 759999605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371487076 + 135512881 = 19274^2 + 11641^2 .

It is a cyclic number.

It is not a de Polignac number, because 506999957 - 2²⁶ = 439891093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 506999896 and 506999905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506999917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253499978 + 253499979.

It is an arithmetic number, because the mean of its divisors is an integer number (253499979).

Almost surely, 2^506999957 is an apocalyptic number.

It is an amenable number.

506999957 is a deficient number, since it is larger than the sum of its proper divisors (1).

506999957 is an equidigital number, since it uses as much as digits as its factorization.

506999957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6889050, while the sum is 59.

The square root of 506999957 is about 22516.6595435469. The cubic root of 506999957 is about 797.3872873926.

It can be divided in two parts, 50 and 6999957, that added together give a palindrome (7000007).

The spelling of 506999957 in words is "five hundred six million, nine hundred ninety-nine thousand, nine hundred fifty-seven".