1087273172 has 6 divisors (see below), whose sum is σ = 1902728058. Its totient is φ = 543636584.

The previous prime is 1087273171. The next prime is 1087273177. The reversal of 1087273172 is 2713727801.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1044840976 + 42432196 = 32324^2 + 6514^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087273171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135909143 + ... + 135909150.

It is an arithmetic number, because the mean of its divisors is an integer number (317121343).

Almost surely, 2^1087273172 is an apocalyptic number.

It is an amenable number.

1087273172 is a deficient number, since it is larger than the sum of its proper divisors (815454886).

1087273172 is a wasteful number, since it uses less digits than its factorization.

1087273172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271818297 (or 271818295 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 1087273172 is about 32973.8255590703. The cubic root of 1087273172 is about 1028.2835558990.

The spelling of 1087273172 in words is "one billion, eighty-seven million, two hundred seventy-three thousand, one hundred seventy-two".