515249222149 has 2 divisors, whose sum is σ = 515249222150. Its totient is φ = 515249222148.

The previous prime is 515249222143. The next prime is 515249222207. The reversal of 515249222149 is 941222942515.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498301869025 + 16947353124 = 705905^2 + 130182^2 .

It is a cyclic number.

It is not a de Polignac number, because 515249222149 - 2¹³ = 515249213957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 515249222099 and 515249222108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515249222143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257624611074 + 257624611075.

It is an arithmetic number, because the mean of its divisors is an integer number (257624611075).

Almost surely, 2^515249222149 is an apocalyptic number.

It is an amenable number.

515249222149 is a deficient number, since it is larger than the sum of its proper divisors (1).

515249222149 is an equidigital number, since it uses as much as digits as its factorization.

515249222149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 46.

The spelling of 515249222149 in words is "five hundred fifteen billion, two hundred forty-nine million, two hundred twenty-two thousand, one hundred forty-nine".