5537721508 has 24 divisors (see below), whose sum is σ = 11193898464. Its totient is φ = 2369078400.

The previous prime is 5537721493. The next prime is 5537721509. The reversal of 5537721508 is 8051277355.

It is not an unprimeable number, because it can be changed into a prime (5537721509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3700938 + ... + 3702433.

It is an arithmetic number, because the mean of its divisors is an integer number (466412436).

Almost surely, 2^5537721508 is an apocalyptic number.

It is an amenable number.

5537721508 is an abundant number, since it is smaller than the sum of its proper divisors (5656176956).

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

5537721508 is a wasteful number, since it uses less digits than its factorization.

5537721508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7403403 (or 7403401 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 43.

The square root of 5537721508 is about 74415.8686571621. The cubic root of 5537721508 is about 1769.2004334421.

The spelling of 5537721508 in words is "five billion, five hundred thirty-seven million, seven hundred twenty-one thousand, five hundred eight".