1027155445 has 8 divisors (see below), whose sum is σ = 1241584344. Its totient is φ = 815725824.

The previous prime is 1027155403. The next prime is 1027155469. The reversal of 1027155445 is 5445517201.

It can be written as a sum of positive squares in 4 ways, for example, as 92813956 + 934341489 = 9634^2 + 30567^2 .

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 1027155445 - 2¹⁹ = 1026631157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1027155445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 749064 + ... + 750433.

It is an arithmetic number, because the mean of its divisors is an integer number (155198043).

Almost surely, 2^1027155445 is an apocalyptic number.

It is an amenable number.

1027155445 is a deficient number, since it is larger than the sum of its proper divisors (214428899).

1027155445 is a wasteful number, since it uses less digits than its factorization.

1027155445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499639.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 1027155445 is about 32049.2659042294. The cubic root of 1027155445 is about 1008.9710938097.

The spelling of 1027155445 in words is "one billion, twenty-seven million, one hundred fifty-five thousand, four hundred forty-five".