1139553 has 12 divisors (see below), whose sum is σ = 1677780. Its totient is φ = 745056.

The previous prime is 1139549. The next prime is 1139557. The reversal of 1139553 is 3559311.

It is an interprime number because it is at equal distance from previous prime (1139549) and next prime (1139557).

It can be written as a sum of positive squares in 2 ways, for example, as 535824 + 603729 = 732^2 + 777^2 .

It is not a de Polignac number, because 1139553 - 2² = 1139549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1139557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 718 + ... + 1671.

It is an arithmetic number, because the mean of its divisors is an integer number (139815).

2^1139553 is an apocalyptic number.

It is an amenable number.

1139553 is a deficient number, since it is larger than the sum of its proper divisors (538227).

1139553 is a wasteful number, since it uses less digits than its factorization.

1139553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448 (or 2445 counting only the distinct ones).

The product of its digits is 2025, while the sum is 27.

The square root of 1139553 is about 1067.4984777507. The cubic root of 1139553 is about 104.4507372179.

The spelling of 1139553 in words is "one million, one hundred thirty-nine thousand, five hundred fifty-three".