2851124621 has 8 divisors (see below), whose sum is σ = 3020130360. Its totient is φ = 2682262528.

The previous prime is 2851124557. The next prime is 2851124659. The reversal of 2851124621 is 1264211582.

It can be written as a sum of positive squares in 4 ways, for example, as 1815186025 + 1035938596 = 42605^2 + 32186^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2851124621 - 2⁶ = 2851124557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2851124681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6395 + ... + 75783.

It is an arithmetic number, because the mean of its divisors is an integer number (377516295).

Almost surely, 2^2851124621 is an apocalyptic number.

It is an amenable number.

2851124621 is a deficient number, since it is larger than the sum of its proper divisors (169005739).

2851124621 is a wasteful number, since it uses less digits than its factorization.

2851124621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71823.

The product of its digits is 7680, while the sum is 32.

The square root of 2851124621 is about 53395.9232619870. The cubic root of 2851124621 is about 1417.9864042693.

The spelling of 2851124621 in words is "two billion, eight hundred fifty-one million, one hundred twenty-four thousand, six hundred twenty-one".