501205087 has 2 divisors, whose sum is σ = 501205088. Its totient is φ = 501205086.

The previous prime is 501205051. The next prime is 501205093. The reversal of 501205087 is 780502105.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 501205087 - 2⁷ = 501204959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501205027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250602543 + 250602544.

It is an arithmetic number, because the mean of its divisors is an integer number (250602544).

Almost surely, 2^501205087 is an apocalyptic number.

501205087 is a deficient number, since it is larger than the sum of its proper divisors (1).

501205087 is an equidigital number, since it uses as much as digits as its factorization.

501205087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 501205087 is about 22387.6101225656. The cubic root of 501205087 is about 794.3376665086.

The spelling of 501205087 in words is "five hundred one million, two hundred five thousand, eighty-seven".