1553855473 has 8 divisors (see below), whose sum is σ = 1641225600. Its totient is φ = 1467044208.

The previous prime is 1553855461. The next prime is 1553855483. The reversal of 1553855473 is 3745583551.

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 1553855473 - 2²⁹ = 1016984561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1553855483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133993 + ... + 145126.

It is an arithmetic number, because the mean of its divisors is an integer number (205153200).

Almost surely, 2^1553855473 is an apocalyptic number.

It is an amenable number.

1553855473 is a deficient number, since it is larger than the sum of its proper divisors (87370127).

1553855473 is a wasteful number, since it uses less digits than its factorization.

1553855473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279431.

The product of its digits is 1260000, while the sum is 46.

The square root of 1553855473 is about 39418.9735153010. The cubic root of 1553855473 is about 1158.2532849789.

The spelling of 1553855473 in words is "one billion, five hundred fifty-three million, eight hundred fifty-five thousand, four hundred seventy-three".