1055155405 has 32 divisors (see below), whose sum is σ = 1441359360. Its totient is φ = 736588800.

The previous prime is 1055155403. The next prime is 1055155433. The reversal of 1055155405 is 5045515501.

It is not a de Polignac number, because 1055155405 - 2¹ = 1055155403 is a prime.

It is a super-2 number, since 2×1055155405² = 2226705857401428050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055155403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68955 + ... + 82855.

It is an arithmetic number, because the mean of its divisors is an integer number (45042480).

Almost surely, 2^1055155405 is an apocalyptic number.

It is an amenable number.

1055155405 is a deficient number, since it is larger than the sum of its proper divisors (386203955).

1055155405 is a wasteful number, since it uses less digits than its factorization.

1055155405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13989.

The product of its (nonzero) digits is 12500, while the sum is 31.

The square root of 1055155405 is about 32483.1557118455. The cubic root of 1055155405 is about 1018.0571131030.

It can be divided in two parts, 10551 and 55405, that added together give a palindrome (65956).

The spelling of 1055155405 in words is "one billion, fifty-five million, one hundred fifty-five thousand, four hundred five".