1051021161 has 24 divisors (see below), whose sum is σ = 1593958080. Its totient is φ = 666410976.

The previous prime is 1051021151. The next prime is 1051021171. The reversal of 1051021161 is 1611201501.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1051021151) and next prime (1051021171).

It is not a de Polignac number, because 1051021161 - 2⁵ = 1051021129 is a prime.

It is a super-2 number, since 2×1051021161² = 2209290961739575842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051021151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12565 + ... + 47538.

It is an arithmetic number, because the mean of its divisors is an integer number (66414920).

Almost surely, 2^1051021161 is an apocalyptic number.

It is an amenable number.

1051021161 is a deficient number, since it is larger than the sum of its proper divisors (542936919).

1051021161 is a wasteful number, since it uses less digits than its factorization.

1051021161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60205 (or 60202 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

The square root of 1051021161 is about 32419.4565191954. The cubic root of 1051021161 is about 1016.7257434929.

Adding to 1051021161 its reverse (1611201501), we get a palindrome (2662222662).

The spelling of 1051021161 in words is "one billion, fifty-one million, twenty-one thousand, one hundred sixty-one".