1553543155 has 16 divisors (see below), whose sum is σ = 1906900704. Its totient is φ = 1214586880.

The previous prime is 1553543141. The next prime is 1553543171. The reversal of 1553543155 is 5513453551.

It is not a de Polignac number, because 1553543155 - 2²³ = 1545154547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56700 + ... + 79510.

It is an arithmetic number, because the mean of its divisors is an integer number (119181294).

Almost surely, 2^1553543155 is an apocalyptic number.

1553543155 is a deficient number, since it is larger than the sum of its proper divisors (353357549).

1553543155 is a wasteful number, since it uses less digits than its factorization.

1553543155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23126.

The product of its digits is 112500, while the sum is 37.

The square root of 1553543155 is about 39415.0117975372. The cubic root of 1553543155 is about 1158.1756785359.

The spelling of 1553543155 in words is "one billion, five hundred fifty-three million, five hundred forty-three thousand, one hundred fifty-five".