13550022520 has 32 divisors (see below), whose sum is σ = 32092160400. Its totient is φ = 5134745088.

The previous prime is 13550022517. The next prime is 13550022523. The reversal of 13550022520 is 2522005531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13550022517) and next prime (13550022523).

It is a super-2 number, since 2×13550022520² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13550022523) 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, 8913729 + ... + 8915248.

Almost surely, 2^13550022520 is an apocalyptic number.

13550022520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13550022520 is an abundant number, since it is smaller than the sum of its proper divisors (18542137880).

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

13550022520 is a wasteful number, since it uses less digits than its factorization.

13550022520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17829007 (or 17829003 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 13550022520 in words is "thirteen billion, five hundred fifty million, twenty-two thousand, five hundred twenty".