1113551797 has 2 divisors, whose sum is σ = 1113551798. Its totient is φ = 1113551796.

The previous prime is 1113551771. The next prime is 1113551807. The reversal of 1113551797 is 7971553111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1099519281 + 14032516 = 33159^2 + 3746^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113551797 - 2⁷ = 1113551669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113551707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556775898 + 556775899.

It is an arithmetic number, because the mean of its divisors is an integer number (556775899).

Almost surely, 2^1113551797 is an apocalyptic number.

It is an amenable number.

1113551797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113551797 is an equidigital number, since it uses as much as digits as its factorization.

1113551797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33075, while the sum is 40.

The square root of 1113551797 is about 33369.9235390194. The cubic root of 1113551797 is about 1036.5019918924.

The spelling of 1113551797 in words is "one billion, one hundred thirteen million, five hundred fifty-one thousand, seven hundred ninety-seven".