506021407 has 2 divisors, whose sum is σ = 506021408. Its totient is φ = 506021406.

The previous prime is 506021393. The next prime is 506021437. The reversal of 506021407 is 704120605.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506021407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506021437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253010703 + 253010704.

It is an arithmetic number, because the mean of its divisors is an integer number (253010704).

Almost surely, 2^506021407 is an apocalyptic number.

506021407 is a deficient number, since it is larger than the sum of its proper divisors (1).

506021407 is an equidigital number, since it uses as much as digits as its factorization.

506021407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 506021407 is about 22494.9195819856. The cubic root of 506021407 is about 796.8739501552.

The spelling of 506021407 in words is "five hundred six million, twenty-one thousand, four hundred seven".