1551054545455 has 8 divisors (see below), whose sum is σ = 1873120649472. Its totient is φ = 1232940173088.

The previous prime is 1551054545317. The next prime is 1551054545531. The reversal of 1551054545455 is 5545454501551.

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

It is a cyclic number.

It is not a de Polignac number, because 1551054545455 - 2¹⁵ = 1551054512687 is a prime.

It is a super-2 number, since 2×1551054545455² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1551054545399 and 1551054545408.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 987932047 + ... + 987933616.

It is an arithmetic number, because the mean of its divisors is an integer number (234140081184).

Almost surely, 2^{1551054545455} is an apocalyptic number.

1551054545455 is a deficient number, since it is larger than the sum of its proper divisors (322066104017).

1551054545455 is a wasteful number, since it uses less digits than its factorization.

1551054545455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975865825.

The product of its (nonzero) digits is 5000000, while the sum is 49.

The spelling of 1551054545455 in words is "one trillion, five hundred fifty-one billion, fifty-four million, five hundred forty-five thousand, four hundred fifty-five".