1373272155 has 48 divisors (see below), whose sum is σ = 2629972800. Its totient is φ = 659349504.

The previous prime is 1373272151. The next prime is 1373272157. The reversal of 1373272155 is 5512723731.

It is a happy number.

1373272155 is a `hidden beast` number, since 1 + 373 + 272 + 15 + 5 = 666.

It is not a de Polignac number, because 1373272155 - 2² = 1373272151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1373272151) 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 47 ways as a sum of consecutive naturals, for example, 21430 + ... + 56619.

It is an arithmetic number, because the mean of its divisors is an integer number (54791100).

Almost surely, 2^1373272155 is an apocalyptic number.

1373272155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1373272155 is a deficient number, since it is larger than the sum of its proper divisors (1256700645).

1373272155 is a wasteful number, since it uses less digits than its factorization.

1373272155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78100 (or 78097 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 1373272155 is about 37057.6868544166. The cubic root of 1373272155 is about 1111.5240690909.

Adding to 1373272155 its reverse (5512723731), we get a palindrome (6885995886).

The spelling of 1373272155 in words is "one billion, three hundred seventy-three million, two hundred seventy-two thousand, one hundred fifty-five".