1051511161 has 2 divisors, whose sum is σ = 1051511162. Its totient is φ = 1051511160.

The previous prime is 1051511141. The next prime is 1051511173. The reversal of 1051511161 is 1611151501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016334400 + 35176761 = 31880^2 + 5931^2 .

It is a cyclic number.

It is not a de Polignac number, because 1051511161 - 2¹⁷ = 1051380089 is a prime.

It is a super-2 number, since 2×1051511161² = 2211351443415135842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1051511141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525755580 + 525755581.

It is an arithmetic number, because the mean of its divisors is an integer number (525755581).

Almost surely, 2^1051511161 is an apocalyptic number.

It is an amenable number.

1051511161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051511161 is an equidigital number, since it uses as much as digits as its factorization.

1051511161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 22.

The square root of 1051511161 is about 32427.0128288130. The cubic root of 1051511161 is about 1016.8837226187.

Adding to 1051511161 its reverse (1611151501), we get a palindrome (2662662662).

The spelling of 1051511161 in words is "one billion, fifty-one million, five hundred eleven thousand, one hundred sixty-one".