553380981 has 8 divisors (see below), whose sum is σ = 739508640. Its totient is φ = 368086992.

The previous prime is 553380941. The next prime is 553381009. The reversal of 553380981 is 189083355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 553380981 - 2¹³ = 553372789 is a prime.

It is a super-2 number, since 2×553380981² = 612461020265044722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553380911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206866 + ... + 209523.

It is an arithmetic number, because the mean of its divisors is an integer number (92438580).

Almost surely, 2^553380981 is an apocalyptic number.

It is an amenable number.

553380981 is a deficient number, since it is larger than the sum of its proper divisors (186127659).

553380981 is a wasteful number, since it uses less digits than its factorization.

553380981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416835.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 553380981 is about 23524.0511179516. The cubic root of 553380981 is about 820.9966965279.

The spelling of 553380981 in words is "five hundred fifty-three million, three hundred eighty thousand, nine hundred eighty-one".