1138550 has 24 divisors (see below), whose sum is σ = 2420976. Its totient is φ = 390240.

The previous prime is 1138547. The next prime is 1138559. The reversal of 1138550 is 558311.

It is a super-2 number, since 2×1138550² = 2592592205000, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 1277 + ... + 1976.

It is an arithmetic number, because the mean of its divisors is an integer number (100874).

2^1138550 is an apocalyptic number.

1138550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138550 is an abundant number, since it is smaller than the sum of its proper divisors (1282426).

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

1138550 is a wasteful number, since it uses less digits than its factorization.

1138550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272 (or 3267 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1138550 is about 1067.0285844344. The cubic root of 1138550 is about 104.4200834319.

The spelling of 1138550 in words is "one million, one hundred thirty-eight thousand, five hundred fifty".