553381 has 4 divisors (see below), whose sum is σ = 571264. Its totient is φ = 535500.

The previous prime is 553369. The next prime is 553411. The reversal of 553381 is 183355.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 183355 = 5 ⋅36671.

It is a cyclic number.

It is not a de Polignac number, because 553381 - 2⁷ = 553253 is a prime.

It is a super-2 number, since 2×553381² = 612461062322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8895 + ... + 8956.

It is an arithmetic number, because the mean of its divisors is an integer number (142816).

2⁵⁵³³⁸¹ is an apocalyptic number.

It is an amenable number.

553381 is a deficient number, since it is larger than the sum of its proper divisors (17883).

553381 is a wasteful number, since it uses less digits than its factorization.

553381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17882.

The product of its digits is 1800, while the sum is 25.

The square root of 553381 is about 743.8958260402. The cubic root of 553381 is about 82.0996705924.

The spelling of 553381 in words is "five hundred fifty-three thousand, three hundred eighty-one".