15540455226 has 8 divisors (see below), whose sum is σ = 31080910464. Its totient is φ = 5180151740.

The previous prime is 15540455197. The next prime is 15540455239. The reversal of 15540455226 is 62255404551.

15540455226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

15540455226 is an admirable number.

It is a super-2 number, since 2×15540455226² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1295037930 + ... + 1295037941.

It is an arithmetic number, because the mean of its divisors is an integer number (3885113808).

Almost surely, 2^15540455226 is an apocalyptic number.

15540455226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15540455226 is a wasteful number, since it uses less digits than its factorization.

15540455226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590075876.

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 15540455226 its reverse (62255404551), we get a palindrome (77795859777).

The spelling of 15540455226 in words is "fifteen billion, five hundred forty million, four hundred fifty-five thousand, two hundred twenty-six".