550033981 has 32 divisors (see below), whose sum is σ = 664876800. Its totient is φ = 445132800.

The previous prime is 550033943. The next prime is 550034003. The reversal of 550033981 is 189330055.

It is not a de Polignac number, because 550033981 - 2⁷ = 550033853 is a prime.

It is a super-2 number, since 2×550033981² = 605074760509416722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550033381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2849821 + ... + 2850013.

It is an arithmetic number, because the mean of its divisors is an integer number (20777400).

Almost surely, 2^550033981 is an apocalyptic number.

It is an amenable number.

550033981 is a deficient number, since it is larger than the sum of its proper divisors (114842819).

550033981 is a wasteful number, since it uses less digits than its factorization.

550033981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 550033981 is about 23452.8032652815. The cubic root of 550033981 is about 819.3381438023.

The spelling of 550033981 in words is "five hundred fifty million, thirty-three thousand, nine hundred eighty-one".