5155511 has 2 divisors, whose sum is σ = 5155512. Its totient is φ = 5155510.

The previous prime is 5155499. The next prime is 5155547. The reversal of 5155511 is 1155515.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5155511 - 2¹⁸ = 4893367 is a prime.

It is a super-2 number, since 2×5155511² = 53158587342242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5155561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2577755 + 2577756.

It is an arithmetic number, because the mean of its divisors is an integer number (2577756).

Almost surely, 2^5155511 is an apocalyptic number.

5155511 is a deficient number, since it is larger than the sum of its proper divisors (1).

5155511 is an equidigital number, since it uses as much as digits as its factorization.

5155511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 625, while the sum is 23.

The square root of 5155511 is about 2270.5750372978. The cubic root of 5155511 is about 172.7523269373.

The spelling of 5155511 in words is "five million, one hundred fifty-five thousand, five hundred eleven".