1155172406 has 16 divisors (see below), whose sum is σ = 1893870720. Its totient is φ = 526074240.

The previous prime is 1155172397. The next prime is 1155172411. The reversal of 1155172406 is 6042715511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546941 + ... + 549048.

It is an arithmetic number, because the mean of its divisors is an integer number (118366920).

Almost surely, 2^1155172406 is an apocalyptic number.

1155172406 is a deficient number, since it is larger than the sum of its proper divisors (738698314).

1155172406 is a wasteful number, since it uses less digits than its factorization.

1155172406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096039.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1155172406 is about 33987.8273209689. The cubic root of 1155172406 is about 1049.2579506883.

Adding to 1155172406 its reverse (6042715511), we get a palindrome (7197887917).

The spelling of 1155172406 in words is "one billion, one hundred fifty-five million, one hundred seventy-two thousand, four hundred six".