1061115157 has 4 divisors (see below), whose sum is σ = 1061359596. Its totient is φ = 1060870720.

The previous prime is 1061115149. The next prime is 1061115199. The reversal of 1061115157 is 7515111601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 699126481 + 361988676 = 26441^2 + 19026^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061115157 - 2³ = 1061115149 is a prime.

It is a super-2 number, since 2×1061115157² = 2251930752830269298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061115127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115588 + ... + 124429.

It is an arithmetic number, because the mean of its divisors is an integer number (265339899).

Almost surely, 2^1061115157 is an apocalyptic number.

It is an amenable number.

1061115157 is a deficient number, since it is larger than the sum of its proper divisors (244439).

1061115157 is an equidigital number, since it uses as much as digits as its factorization.

1061115157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244438.

The product of its (nonzero) digits is 1050, while the sum is 28.

The square root of 1061115157 is about 32574.7625777994. The cubic root of 1061115157 is about 1019.9702532014.

Adding to 1061115157 its reverse (7515111601), we get a palindrome (8576226758).

The spelling of 1061115157 in words is "one billion, sixty-one million, one hundred fifteen thousand, one hundred fifty-seven".