2161652051 has 16 divisors (see below), whose sum is σ = 2466692928. Its totient is φ = 1876608000.

The previous prime is 2161652029. The next prime is 2161652093. The reversal of 2161652051 is 1502561612.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2161652051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2161652551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395306 + ... + 400736.

It is an arithmetic number, because the mean of its divisors is an integer number (154168308).

Almost surely, 2^2161652051 is an apocalyptic number.

2161652051 is a deficient number, since it is larger than the sum of its proper divisors (305040877).

2161652051 is a wasteful number, since it uses less digits than its factorization.

2161652051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7262.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 2161652051 is about 46493.5699962909. The cubic root of 2161652051 is about 1292.9902889225.

The spelling of 2161652051 in words is "two billion, one hundred sixty-one million, six hundred fifty-two thousand, fifty-one".