1273124551 has 2 divisors, whose sum is σ = 1273124552. Its totient is φ = 1273124550.

The previous prime is 1273124539. The next prime is 1273124561. The reversal of 1273124551 is 1554213721.

It is a strong prime.

It is an emirp because it is prime and its reverse (1554213721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1273124551 - 2⁵ = 1273124519 is a prime.

It is a super-2 number, since 2×1273124551² = 3241692244717903202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1273124561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636562275 + 636562276.

It is an arithmetic number, because the mean of its divisors is an integer number (636562276).

Almost surely, 2^1273124551 is an apocalyptic number.

1273124551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273124551 is an equidigital number, since it uses as much as digits as its factorization.

1273124551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 31.

The square root of 1273124551 is about 35680.8709394824. The cubic root of 1273124551 is about 1083.8195096138.

The spelling of 1273124551 in words is "one billion, two hundred seventy-three million, one hundred twenty-four thousand, five hundred fifty-one".