1553553023 has 4 divisors (see below), whose sum is σ = 1694785128. Its totient is φ = 1412320920.

The previous prime is 1553553019. The next prime is 1553553083. The reversal of 1553553023 is 3203553551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1553553023 - 2² = 1553553019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553553083) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 70616036 + ... + 70616057.

It is an arithmetic number, because the mean of its divisors is an integer number (423696282).

Almost surely, 2^1553553023 is an apocalyptic number.

1553553023 is a deficient number, since it is larger than the sum of its proper divisors (141232105).

1553553023 is a wasteful number, since it uses less digits than its factorization.

1553553023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141232104.

The product of its (nonzero) digits is 33750, while the sum is 32.

The square root of 1553553023 is about 39415.1369780697. The cubic root of 1553553023 is about 1158.1781307483.

The spelling of 1553553023 in words is "one billion, five hundred fifty-three million, five hundred fifty-three thousand, twenty-three".