1553689456 has 20 divisors (see below), whose sum is σ = 3283934904. Its totient is φ = 706222400.

The previous prime is 1553689447. The next prime is 1553689477. The reversal of 1553689456 is 6549863551.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4413715 + ... + 4414066.

Almost surely, 2^1553689456 is an apocalyptic number.

1553689456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1553689456 is an abundant number, since it is smaller than the sum of its proper divisors (1730245448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1553689456 is a wasteful number, since it uses less digits than its factorization.

1553689456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8827800 (or 8827794 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 52.

The square root of 1553689456 is about 39416.8676584023. The cubic root of 1553689456 is about 1158.2120334838.

The spelling of 1553689456 in words is "one billion, five hundred fifty-three million, six hundred eighty-nine thousand, four hundred fifty-six".