553561389 has 12 divisors (see below), whose sum is σ = 825382272. Its totient is φ = 357136200.

The previous prime is 553561387. The next prime is 553561391. The reversal of 553561389 is 983165355.

553561389 is a `hidden beast` number, since 5 + 5 + 3 + 561 + 3 + 89 = 666.

It is an interprime number because it is at equal distance from previous prime (553561387) and next prime (553561391).

It is not a de Polignac number, because 553561389 - 2¹ = 553561387 is a prime.

It is a super-2 number, since 2×553561389² = 612860422783218642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553561387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 991767 + ... + 992324.

It is an arithmetic number, because the mean of its divisors is an integer number (68781856).

Almost surely, 2^553561389 is an apocalyptic number.

It is an amenable number.

553561389 is a deficient number, since it is larger than the sum of its proper divisors (271820883).

553561389 is a wasteful number, since it uses less digits than its factorization.

553561389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984128 (or 1984125 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The square root of 553561389 is about 23527.8853490916. The cubic root of 553561389 is about 821.0859046771.

The spelling of 553561389 in words is "five hundred fifty-three million, five hundred sixty-one thousand, three hundred eighty-nine".