5547121453 has 2 divisors, whose sum is σ = 5547121454. Its totient is φ = 5547121452.

The previous prime is 5547121409. The next prime is 5547121477. The reversal of 5547121453 is 3541217455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5523908329 + 23213124 = 74323^2 + 4818^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5547121453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5547121253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2773560726 + 2773560727.

It is an arithmetic number, because the mean of its divisors is an integer number (2773560727).

Almost surely, 2^5547121453 is an apocalyptic number.

It is an amenable number.

5547121453 is a deficient number, since it is larger than the sum of its proper divisors (1).

5547121453 is an equidigital number, since it uses as much as digits as its factorization.

5547121453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84000, while the sum is 37.

The square root of 5547121453 is about 74479.0000805596. Note that the first 4 decimals coincide. The cubic root of 5547121453 is about 1770.2009042386.

The spelling of 5547121453 in words is "five billion, five hundred forty-seven million, one hundred twenty-one thousand, four hundred fifty-three".