1553453534197 has 4 divisors (see below), whose sum is σ = 1553461761676. Its totient is φ = 1553445306720.

The previous prime is 1553453534177. The next prime is 1553453534209. The reversal of 1553453534197 is 7914353543551.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 891653387076 + 661800147121 = 944274^2 + 813511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1553453534197 - 2¹⁵ = 1553453501429 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 (1553453534117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3823704 + ... + 4210417.

It is an arithmetic number, because the mean of its divisors is an integer number (388365440419).

Almost surely, 2^{1553453534197} is an apocalyptic number.

It is an amenable number.

1553453534197 is a deficient number, since it is larger than the sum of its proper divisors (8227479).

1553453534197 is an equidigital number, since it uses as much as digits as its factorization.

1553453534197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8227478.

The product of its digits is 17010000, while the sum is 55.

The spelling of 1553453534197 in words is "one trillion, five hundred fifty-three billion, four hundred fifty-three million, five hundred thirty-four thousand, one hundred ninety-seven".