7522221951 has 64 divisors (see below), whose sum is σ = 11670650880. Its totient is φ = 4783212000.

The previous prime is 7522221947. The next prime is 7522221953. The reversal of 7522221951 is 1591222257.

It is not a de Polignac number, because 7522221951 - 2² = 7522221947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7522221953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33731826 + ... + 33732048.

It is an arithmetic number, because the mean of its divisors is an integer number (182353920).

Almost surely, 2^7522221951 is an apocalyptic number.

7522221951 is a deficient number, since it is larger than the sum of its proper divisors (4148428929).

7522221951 is a wasteful number, since it uses less digits than its factorization.

7522221951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 659 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 7522221951 is about 86730.7439781304. The cubic root of 7522221951 is about 1959.3651587427.

The spelling of 7522221951 in words is "seven billion, five hundred twenty-two million, two hundred twenty-one thousand, nine hundred fifty-one".