1055187387 has 6 divisors (see below), whose sum is σ = 1524159572. Its totient is φ = 703458252.

The previous prime is 1055187379. The next prime is 1055187389. The reversal of 1055187387 is 7837815501.

1055187387 is a `hidden beast` number, since 10 + 551 + 8 + 7 + 3 + 87 = 666.

It is not a de Polignac number, because 1055187387 - 2³ = 1055187379 is a prime.

It is a super-2 number, since 2×1055187387² = 2226840843367775538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055187389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58621513 + ... + 58621530.

Almost surely, 2^1055187387 is an apocalyptic number.

1055187387 is a deficient number, since it is larger than the sum of its proper divisors (468972185).

1055187387 is a wasteful number, since it uses less digits than its factorization.

1055187387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117243049 (or 117243046 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 45.

The square root of 1055187387 is about 32483.6479940292. The cubic root of 1055187387 is about 1018.0673988465.

The spelling of 1055187387 in words is "one billion, fifty-five million, one hundred eighty-seven thousand, three hundred eighty-seven".