6515557422 has 24 divisors (see below), whose sum is σ = 14323458408. Its totient is φ = 1974411120.

The previous prime is 6515557357. The next prime is 6515557423. The reversal of 6515557422 is 2247555156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6515557423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4486573 + ... + 4488024.

It is an arithmetic number, because the mean of its divisors is an integer number (596810767).

Almost surely, 2^6515557422 is an apocalyptic number.

6515557422 is an abundant number, since it is smaller than the sum of its proper divisors (7807900986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6515557422 is a wasteful number, since it uses less digits than its factorization.

6515557422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8974624 (or 8974613 counting only the distinct ones).

The product of its digits is 420000, while the sum is 42.

The square root of 6515557422 is about 80719.0028555854. The cubic root of 6515557422 is about 1867.7433216107.

The spelling of 6515557422 in words is "six billion, five hundred fifteen million, five hundred fifty-seven thousand, four hundred twenty-two".