1553073445 has 16 divisors (see below), whose sum is σ = 2323559808. Its totient is φ = 968149440.

The previous prime is 1553073373. The next prime is 1553073451. The reversal of 1553073445 is 5443703551.

It is not a de Polignac number, because 1553073445 - 2⁹ = 1553072933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2016594 + ... + 2017363.

It is an arithmetic number, because the mean of its divisors is an integer number (145222488).

Almost surely, 2^1553073445 is an apocalyptic number.

It is an amenable number.

1553073445 is a deficient number, since it is larger than the sum of its proper divisors (770486363).

1553073445 is a wasteful number, since it uses less digits than its factorization.

1553073445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033980.

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 1553073445 is about 39409.0528305363. The cubic root of 1553073445 is about 1158.0589429023.

Adding to 1553073445 its reverse (5443703551), we get a palindrome (6996776996).

The spelling of 1553073445 in words is "one billion, five hundred fifty-three million, seventy-three thousand, four hundred forty-five".