7221136575 has 24 divisors (see below), whose sum is σ = 11953484928. Its totient is φ = 3846582880.

The previous prime is 7221136553. The next prime is 7221136577. The reversal of 7221136575 is 5756311227.

It is a happy number.

It is not a de Polignac number, because 7221136575 - 2⁵ = 7221136543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221136577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3814 + ... + 120236.

It is an arithmetic number, because the mean of its divisors is an integer number (498061872).

Almost surely, 2^7221136575 is an apocalyptic number.

7221136575 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7221136575 is a deficient number, since it is larger than the sum of its proper divisors (4732348353).

7221136575 is a wasteful number, since it uses less digits than its factorization.

7221136575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117263 (or 117258 counting only the distinct ones).

The product of its digits is 88200, while the sum is 39.

The square root of 7221136575 is about 84977.2709317027. The cubic root of 7221136575 is about 1932.8664730990.

The spelling of 7221136575 in words is "seven billion, two hundred twenty-one million, one hundred thirty-six thousand, five hundred seventy-five".