501435139 has 2 divisors, whose sum is σ = 501435140. Its totient is φ = 501435138.

The previous prime is 501435101. The next prime is 501435149. The reversal of 501435139 is 931534105.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 501435139 - 2²³ = 493046531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 501435139.

It is not a weakly prime, because it can be changed into another prime (501435149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250717569 + 250717570.

It is an arithmetic number, because the mean of its divisors is an integer number (250717570).

Almost surely, 2^501435139 is an apocalyptic number.

501435139 is a deficient number, since it is larger than the sum of its proper divisors (1).

501435139 is an equidigital number, since it uses as much as digits as its factorization.

501435139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 501435139 is about 22392.7474643019. The cubic root of 501435139 is about 794.4591809823.

The spelling of 501435139 in words is "five hundred one million, four hundred thirty-five thousand, one hundred thirty-nine".