1138554 has 24 divisors (see below), whose sum is σ = 2525952. Its totient is φ = 370440.

The previous prime is 1138547. The next prime is 1138559. The reversal of 1138554 is 4558311.

It is not an unprimeable number, because it can be changed into a prime (1138559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39 + ... + 1509.

It is an arithmetic number, because the mean of its divisors is an integer number (105248).

2^1138554 is an apocalyptic number.

1138554 is an abundant number, since it is smaller than the sum of its proper divisors (1387398).

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

1138554 is a wasteful number, since it uses less digits than its factorization.

1138554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522 (or 1519 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1138554 is about 1067.0304587967. The cubic root of 1138554 is about 104.4202057161.

The spelling of 1138554 in words is "one million, one hundred thirty-eight thousand, five hundred fifty-four".