515154149 has 2 divisors, whose sum is σ = 515154150. Its totient is φ = 515154148.

The previous prime is 515154121. The next prime is 515154151. The reversal of 515154149 is 941451515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 432016225 + 83137924 = 20785^2 + 9118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515154149 is a prime.

Together with 515154151, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_27110789 and since 515154149 and 27110789 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515154109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257577074 + 257577075.

It is an arithmetic number, because the mean of its divisors is an integer number (257577075).

Almost surely, 2^515154149 is an apocalyptic number.

It is an amenable number.

515154149 is a deficient number, since it is larger than the sum of its proper divisors (1).

515154149 is an equidigital number, since it uses as much as digits as its factorization.

515154149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 35.

The square root of 515154149 is about 22697.0074899754. The cubic root of 515154149 is about 801.6394240037.

The spelling of 515154149 in words is "five hundred fifteen million, one hundred fifty-four thousand, one hundred forty-nine".