552073321 has 4 divisors (see below), whose sum is σ = 552135492. Its totient is φ = 552011152.

The previous prime is 552073309. The next prime is 552073331. The reversal of 552073321 is 123370255.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 123370255 = 5 ⋅24674051.

It can be written as a sum of positive squares in 2 ways, for example, as 309056400 + 243016921 = 17580^2 + 15589^2 .

It is a cyclic number.

It is not a de Polignac number, because 552073321 - 2⁹ = 552072809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 552073321.

It is not an unprimeable number, because it can be changed into a prime (552073331) 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, 14986 + ... + 36451.

It is an arithmetic number, because the mean of its divisors is an integer number (138033873).

Almost surely, 2^552073321 is an apocalyptic number.

It is an amenable number.

552073321 is a deficient number, since it is larger than the sum of its proper divisors (62171).

552073321 is a wasteful number, since it uses less digits than its factorization.

552073321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62170.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 552073321 is about 23496.2405716319. The cubic root of 552073321 is about 820.3495044914.

The spelling of 552073321 in words is "five hundred fifty-two million, seventy-three thousand, three hundred twenty-one".