7721522253 has 48 divisors (see below), whose sum is σ = 11726208000. Its totient is φ = 4890251520.

The previous prime is 7721522231. The next prime is 7721522269. The reversal of 7721522253 is 3522251277.

It is not a de Polignac number, because 7721522253 - 2⁶ = 7721522189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7721522203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3698776 + ... + 3700862.

It is an arithmetic number, because the mean of its divisors is an integer number (244296000).

Almost surely, 2^7721522253 is an apocalyptic number.

It is an amenable number.

7721522253 is a deficient number, since it is larger than the sum of its proper divisors (4004685747).

7721522253 is a wasteful number, since it uses less digits than its factorization.

7721522253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362 (or 2359 counting only the distinct ones).

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

The square root of 7721522253 is about 87872.1927176055. The cubic root of 7721522253 is about 1976.5189193896.

The spelling of 7721522253 in words is "seven billion, seven hundred twenty-one million, five hundred twenty-two thousand, two hundred fifty-three".