551983933 has 4 divisors (see below), whose sum is σ = 563728320. Its totient is φ = 540239548.

The previous prime is 551983921. The next prime is 551984021. The reversal of 551983933 is 339389155.

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.

It is a cyclic number.

It is not a de Polignac number, because 551983933 - 2²¹ = 549886781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551983433) 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, 5872123 + ... + 5872216.

It is an arithmetic number, because the mean of its divisors is an integer number (140932080).

Almost surely, 2^551983933 is an apocalyptic number.

It is an amenable number.

551983933 is a deficient number, since it is larger than the sum of its proper divisors (11744387).

551983933 is a wasteful number, since it uses less digits than its factorization.

551983933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11744386.

The product of its digits is 437400, while the sum is 46.

The square root of 551983933 is about 23494.3383179863. The cubic root of 551983933 is about 820.3052269430.

The spelling of 551983933 in words is "five hundred fifty-one million, nine hundred eighty-three thousand, nine hundred thirty-three".