2772106521 has 16 divisors (see below), whose sum is σ = 3832209408. Its totient is φ = 1780563600.

The previous prime is 2772106511. The next prime is 2772106523. The reversal of 2772106521 is 1256012772.

It is not a de Polignac number, because 2772106521 - 2⁶ = 2772106457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2772106523) 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, 44545 + ... + 86766.

It is an arithmetic number, because the mean of its divisors is an integer number (239513088).

Almost surely, 2^2772106521 is an apocalyptic number.

It is an amenable number.

2772106521 is a deficient number, since it is larger than the sum of its proper divisors (1060102887).

2772106521 is a wasteful number, since it uses less digits than its factorization.

2772106521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131572.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 2772106521 is about 52650.7979141817. The cubic root of 2772106521 is about 1404.7637923939.

The spelling of 2772106521 in words is "two billion, seven hundred seventy-two million, one hundred six thousand, five hundred twenty-one".