1553213511 has 12 divisors (see below), whose sum is σ = 2245248720. Its totient is φ = 1034682720.

The previous prime is 1553213479. The next prime is 1553213531. The reversal of 1553213511 is 1153123551.

It is not a de Polignac number, because 1553213511 - 2⁵ = 1553213479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553213531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53550 + ... + 77291.

It is an arithmetic number, because the mean of its divisors is an integer number (187104060).

Almost surely, 2^1553213511 is an apocalyptic number.

1553213511 is a deficient number, since it is larger than the sum of its proper divisors (692035209).

1553213511 is a wasteful number, since it uses less digits than its factorization.

1553213511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132166 (or 132163 counting only the distinct ones).

The product of its digits is 2250, while the sum is 27.

The square root of 1553213511 is about 39410.8298694661. The cubic root of 1553213511 is about 1158.0937555526.

The spelling of 1553213511 in words is "one billion, five hundred fifty-three million, two hundred thirteen thousand, five hundred eleven".