511172887 has 2 divisors, whose sum is σ = 511172888. Its totient is φ = 511172886.

The previous prime is 511172869. The next prime is 511172891. The reversal of 511172887 is 788271115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 511172887 - 2²³ = 502784279 is a prime.

It is a super-2 number, since 2×511172887² = 522595440807829538, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511172287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255586443 + 255586444.

It is an arithmetic number, because the mean of its divisors is an integer number (255586444).

Almost surely, 2^511172887 is an apocalyptic number.

511172887 is a deficient number, since it is larger than the sum of its proper divisors (1).

511172887 is an equidigital number, since it uses as much as digits as its factorization.

511172887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31360, while the sum is 40.

The square root of 511172887 is about 22609.1328228218. The cubic root of 511172887 is about 799.5689797979.

The spelling of 511172887 in words is "five hundred eleven million, one hundred seventy-two thousand, eight hundred eighty-seven".