1275157087 has 2 divisors, whose sum is σ = 1275157088. Its totient is φ = 1275157086.

The previous prime is 1275157073. The next prime is 1275157111. The reversal of 1275157087 is 7807515721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1275157087 - 2¹¹ = 1275155039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275157027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637578543 + 637578544.

It is an arithmetic number, because the mean of its divisors is an integer number (637578544).

Almost surely, 2^1275157087 is an apocalyptic number.

1275157087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275157087 is an equidigital number, since it uses as much as digits as its factorization.

1275157087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137200, while the sum is 43.

The square root of 1275157087 is about 35709.3417329415. The cubic root of 1275157087 is about 1084.3959734800.

The spelling of 1275157087 in words is "one billion, two hundred seventy-five million, one hundred fifty-seven thousand, eighty-seven".