1055203001549 has 8 divisors (see below), whose sum is σ = 1117296222840. Its totient is φ = 993112275456.

The previous prime is 1055203001543. The next prime is 1055203001561. The reversal of 1055203001549 is 9451003025501.

It can be written as a sum of positive squares in 4 ways, for example, as 570100502500 + 485102499049 = 755050^2 + 696493^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1055203001549 - 2²⁸ = 1054934566093 is a prime.

It is a super-2 number, since 2×1055203001549² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055203001543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284687 + ... + 1480355.

It is an arithmetic number, because the mean of its divisors is an integer number (139662027855).

Almost surely, 2^{1055203001549} is an apocalyptic number.

It is an amenable number.

1055203001549 is a deficient number, since it is larger than the sum of its proper divisors (62093221291).

1055203001549 is a wasteful number, since it uses less digits than its factorization.

1055203001549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247599.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 1055203001549 in words is "one trillion, fifty-five billion, two hundred three million, one thousand, five hundred forty-nine".