1553002401 has 4 divisors (see below), whose sum is σ = 2070669872. Its totient is φ = 1035334932.

The previous prime is 1553002393. The next prime is 1553002433. The reversal of 1553002401 is 1042003551.

1553002401 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1553002401 - 2³ = 1553002393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1553002441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258833731 + ... + 258833736.

It is an arithmetic number, because the mean of its divisors is an integer number (517667468).

Almost surely, 2^1553002401 is an apocalyptic number.

It is an amenable number.

1553002401 is a deficient number, since it is larger than the sum of its proper divisors (517667471).

1553002401 is an equidigital number, since it uses as much as digits as its factorization.

1553002401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517667470.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1553002401 is about 39408.1514537285. The cubic root of 1553002401 is about 1158.0412844985.

Adding to 1553002401 its reverse (1042003551), we get a palindrome (2595005952).

The spelling of 1553002401 in words is "one billion, five hundred fifty-three million, two thousand, four hundred one".