1053721851 has 16 divisors (see below), whose sum is σ = 1729185024. Its totient is φ = 555809184.

The previous prime is 1053721849. The next prime is 1053721859. The reversal of 1053721851 is 1581273501.

It is not a de Polignac number, because 1053721851 - 2¹ = 1053721849 is a prime.

It is a super-2 number, since 2×1053721851² = 2220659478549732402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1053721859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1929621 + ... + 1930166.

It is an arithmetic number, because the mean of its divisors is an integer number (108074064).

Almost surely, 2^1053721851 is an apocalyptic number.

1053721851 is a deficient number, since it is larger than the sum of its proper divisors (675463173).

1053721851 is a wasteful number, since it uses less digits than its factorization.

1053721851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859810.

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 1053721851 is about 32461.0820984144. The cubic root of 1053721851 is about 1017.5958536272.

The spelling of 1053721851 in words is "one billion, fifty-three million, seven hundred twenty-one thousand, eight hundred fifty-one".