1157126501 has 2 divisors, whose sum is σ = 1157126502. Its totient is φ = 1157126500.

The previous prime is 1157126479. The next prime is 1157126519. The reversal of 1157126501 is 1056217511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1157020225 + 106276 = 34015^2 + 326^2 .

It is a cyclic number.

It is not a de Polignac number, because 1157126501 - 2²⁶ = 1090017637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157126521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578563250 + 578563251.

It is an arithmetic number, because the mean of its divisors is an integer number (578563251).

Almost surely, 2^1157126501 is an apocalyptic number.

It is an amenable number.

1157126501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157126501 is an equidigital number, since it uses as much as digits as its factorization.

1157126501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 29.

The square root of 1157126501 is about 34016.5621572786. The cubic root of 1157126501 is about 1049.8492605980.

The spelling of 1157126501 in words is "one billion, one hundred fifty-seven million, one hundred twenty-six thousand, five hundred one".