501121151 has 2 divisors, whose sum is σ = 501121152. Its totient is φ = 501121150.

The previous prime is 501121141. The next prime is 501121177. The reversal of 501121151 is 151121105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 501121151 - 2¹⁰ = 501120127 is a prime.

It is a super-2 number, since 2×501121151² = 502244815959129602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501121141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250560575 + 250560576.

It is an arithmetic number, because the mean of its divisors is an integer number (250560576).

Almost surely, 2^501121151 is an apocalyptic number.

501121151 is a deficient number, since it is larger than the sum of its proper divisors (1).

501121151 is an equidigital number, since it uses as much as digits as its factorization.

501121151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50, while the sum is 17.

The square root of 501121151 is about 22385.7354357636. The cubic root of 501121151 is about 794.2933218878.

Adding to 501121151 its reverse (151121105), we get a palindrome (652242256).

It can be divided in two parts, 5011 and 21151, that added together give a palindrome (26162).

The spelling of 501121151 in words is "five hundred one million, one hundred twenty-one thousand, one hundred fifty-one".