505042151 has 2 divisors, whose sum is σ = 505042152. Its totient is φ = 505042150.

The previous prime is 505042147. The next prime is 505042169. The reversal of 505042151 is 151240505.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505042151 - 2² = 505042147 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505042121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252521075 + 252521076.

It is an arithmetic number, because the mean of its divisors is an integer number (252521076).

Almost surely, 2^505042151 is an apocalyptic number.

505042151 is a deficient number, since it is larger than the sum of its proper divisors (1).

505042151 is an equidigital number, since it uses as much as digits as its factorization.

505042151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 505042151 is about 22473.1428821160. The cubic root of 505042151 is about 796.3595796145.

Adding to 505042151 its reverse (151240505), we get a palindrome (656282656).

The spelling of 505042151 in words is "five hundred five million, forty-two thousand, one hundred fifty-one".