1387775275 has 6 divisors (see below), whose sum is σ = 1720841372. Its totient is φ = 1110220200.

The previous prime is 1387775269. The next prime is 1387775287. The reversal of 1387775275 is 5725777831.

It is not a de Polignac number, because 1387775275 - 2¹³ = 1387767083 is a prime.

It is a super-3 number, since 3×1387775275³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 27755481 + ... + 27755530.

Almost surely, 2^1387775275 is an apocalyptic number.

1387775275 is a deficient number, since it is larger than the sum of its proper divisors (333066097).

1387775275 is an equidigital number, since it uses as much as digits as its factorization.

1387775275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55511021 (or 55511016 counting only the distinct ones).

The product of its digits is 2881200, while the sum is 52.

The square root of 1387775275 is about 37252.8559307874. The cubic root of 1387775275 is about 1115.4233078044.

The spelling of 1387775275 in words is "one billion, three hundred eighty-seven million, seven hundred seventy-five thousand, two hundred seventy-five".