1553505045 has 16 divisors (see below), whose sum is σ = 2494098432. Its totient is φ = 825705920.

The previous prime is 1553505029. The next prime is 1553505049. The reversal of 1553505045 is 5405053551.

It is not a de Polignac number, because 1553505045 - 2⁴ = 1553505029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1553504997 and 1553505015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553505049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172341 + ... + 181130.

It is an arithmetic number, because the mean of its divisors is an integer number (155881152).

Almost surely, 2^1553505045 is an apocalyptic number.

1553505045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1553505045 is a deficient number, since it is larger than the sum of its proper divisors (940593387).

1553505045 is a wasteful number, since it uses less digits than its factorization.

1553505045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353772.

The product of its (nonzero) digits is 37500, while the sum is 33.

The square root of 1553505045 is about 39414.5283493282. The cubic root of 1553505045 is about 1158.1662080478.

Adding to 1553505045 its reverse (5405053551), we get a palindrome (6958558596).

The spelling of 1553505045 in words is "one billion, five hundred fifty-three million, five hundred five thousand, forty-five".