55154477445155 has 32 divisors (see below), whose sum is σ = 75352272081408. Its totient is φ = 38362822009600.

The previous prime is 55154477445091. The next prime is 55154477445157.

55154477445155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55154477445155 - 2⁶ = 55154477445091 is a prime.

It is a super-2 number, since 2×55154477445155² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55154477445157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5691047 + ... + 11945583.

It is an arithmetic number, because the mean of its divisors is an integer number (2354758502544).

Almost surely, 2^{55154477445155} is an apocalyptic number.

55154477445155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55154477445155 is a deficient number, since it is larger than the sum of its proper divisors (20197794636253).

55154477445155 is a wasteful number, since it uses less digits than its factorization.

55154477445155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6261547.

The product of its digits is 196000000, while the sum is 62.

The spelling of 55154477445155 in words is "fifty-five trillion, one hundred fifty-four billion, four hundred seventy-seven million, four hundred forty-five thousand, one hundred fifty-five".