1375535556 has 36 divisors (see below), whose sum is σ = 3492386352. Its totient is φ = 456489264.

The previous prime is 1375535549. The next prime is 1375535573. The reversal of 1375535556 is 6555355731.

1375535556 is a `hidden beast` number, since 13 + 7 + 55 + 35 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75990 + ... + 92333.

It is an arithmetic number, because the mean of its divisors is an integer number (97010732).

Almost surely, 2^1375535556 is an apocalyptic number.

It is an amenable number.

1375535556 is an abundant number, since it is smaller than the sum of its proper divisors (2116850796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1375535556 is a wasteful number, since it uses less digits than its factorization.

1375535556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168560 (or 168555 counting only the distinct ones).

The product of its digits is 1181250, while the sum is 45.

The square root of 1375535556 is about 37088.2131680673. The cubic root of 1375535556 is about 1112.1343981667.

The spelling of 1375535556 in words is "one billion, three hundred seventy-five million, five hundred thirty-five thousand, five hundred fifty-six".