1553515001055 has 24 divisors (see below), whose sum is σ = 2785613107680. Its totient is φ = 799970942400.

The previous prime is 1553515001033. The next prime is 1553515001111. The reversal of 1553515001055 is 5501005153551.

1553515001055 is a `hidden beast` number, since 1 + 5 + 53 + 51 + 500 + 1 + 0 + 55 = 666.

It is not a de Polignac number, because 1553515001055 - 2¹⁵ = 1553514968287 is a prime.

It is a super-2 number, since 2×1553515001055² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 595215171 + ... + 595217780.

It is an arithmetic number, because the mean of its divisors is an integer number (116067212820).

Almost surely, 2^{1553515001055} is an apocalyptic number.

1553515001055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1553515001055 is a deficient number, since it is larger than the sum of its proper divisors (1232098106625).

1553515001055 is a wasteful number, since it uses less digits than its factorization.

1553515001055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190432991 (or 1190432988 counting only the distinct ones).

The product of its (nonzero) digits is 46875, while the sum is 36.

The spelling of 1553515001055 in words is "one trillion, five hundred fifty-three billion, five hundred fifteen million, one thousand, fifty-five".