1553213520541 has 2 divisors, whose sum is σ = 1553213520542. Its totient is φ = 1553213520540.

The previous prime is 1553213520539. The next prime is 1553213520623. The reversal of 1553213520541 is 1450253123551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1383658164100 + 169555356441 = 1176290^2 + 411771^2 .

It is a cyclic number.

It is not a de Polignac number, because 1553213520541 - 2¹ = 1553213520539 is a prime.

Together with 1553213520539, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1553213520541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1553213520511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776606760270 + 776606760271.

It is an arithmetic number, because the mean of its divisors is an integer number (776606760271).

Almost surely, 2^{1553213520541} is an apocalyptic number.

It is an amenable number.

1553213520541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553213520541 is an equidigital number, since it uses as much as digits as its factorization.

1553213520541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 1553213520541 in words is "one trillion, five hundred fifty-three billion, two hundred thirteen million, five hundred twenty thousand, five hundred forty-one".