2157052051 has 16 divisors (see below), whose sum is σ = 2715948288. Its totient is φ = 1664172000.

The previous prime is 2157052039. The next prime is 2157052067. The reversal of 2157052051 is 1502507512.

It is a cyclic number.

It is not a de Polignac number, because 2157052051 - 2⁹ = 2157051539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157052031) 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, 130905 + ... + 146458.

It is an arithmetic number, because the mean of its divisors is an integer number (169746768).

Almost surely, 2^2157052051 is an apocalyptic number.

2157052051 is a deficient number, since it is larger than the sum of its proper divisors (558896237).

2157052051 is a wasteful number, since it uses less digits than its factorization.

2157052051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277482.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 2157052051 is about 46444.0744444326. The cubic root of 2157052051 is about 1292.0724755821.

Adding to 2157052051 its reverse (1502507512), we get a palindrome (3659559563).

The spelling of 2157052051 in words is "two billion, one hundred fifty-seven million, fifty-two thousand, fifty-one".