547601221 has 4 divisors (see below), whose sum is σ = 562401292. Its totient is φ = 532801152.

The previous prime is 547601191. The next prime is 547601239. The reversal of 547601221 is 122106745.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 219484225 + 328116996 = 14815^2 + 18114^2 .

It is a cyclic number.

It is not a de Polignac number, because 547601221 - 2²⁵ = 514046789 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 547601221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (547601281) 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, 7399980 + ... + 7400053.

It is an arithmetic number, because the mean of its divisors is an integer number (140600323).

Almost surely, 2^547601221 is an apocalyptic number.

It is an amenable number.

547601221 is a deficient number, since it is larger than the sum of its proper divisors (14800071).

547601221 is a wasteful number, since it uses less digits than its factorization.

547601221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14800070.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 547601221 is about 23400.8807740222. The cubic root of 547601221 is about 818.1284009836.

Adding to 547601221 its reverse (122106745), we get a palindrome (669707966).

The spelling of 547601221 in words is "five hundred forty-seven million, six hundred one thousand, two hundred twenty-one".