1553054503551 has 4 divisors (see below), whose sum is σ = 2070739338072. Its totient is φ = 1035369669032.

The previous prime is 1553054503531. The next prime is 1553054503589.

1553054503551 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 1553054503551 - 2⁷ = 1553054503423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553054503531) 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, 258842417256 + ... + 258842417261.

It is an arithmetic number, because the mean of its divisors is an integer number (517684834518).

Almost surely, 2^{1553054503551} is an apocalyptic number.

1553054503551 is a deficient number, since it is larger than the sum of its proper divisors (517684834521).

1553054503551 is an equidigital number, since it uses as much as digits as its factorization.

1553054503551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517684834520.

The product of its (nonzero) digits is 562500, while the sum is 42.

The spelling of 1553054503551 in words is "one trillion, five hundred fifty-three billion, fifty-four million, five hundred three thousand, five hundred fifty-one".