7221045753 has 20 divisors (see below), whose sum is σ = 11255996928. Its totient is φ = 4604723640.

The previous prime is 7221045751. The next prime is 7221045757. The reversal of 7221045753 is 3575401227.

7221045753 is a `hidden beast` number, since 72 + 2 + 10 + 4 + 575 + 3 = 666.

It is not a de Polignac number, because 7221045753 - 2¹ = 7221045751 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7221045751) 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 19 ways as a sum of consecutive naturals, for example, 1936153 + ... + 1939878.

Almost surely, 2^7221045753 is an apocalyptic number.

It is an amenable number.

7221045753 is a deficient number, since it is larger than the sum of its proper divisors (4034951175).

7221045753 is a wasteful number, since it uses less digits than its factorization.

7221045753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876066 (or 3876057 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 7221045753 is about 84976.7365400672. The cubic root of 7221045753 is about 1932.8583696870.

The spelling of 7221045753 in words is "seven billion, two hundred twenty-one million, forty-five thousand, seven hundred fifty-three".