547421161 has 4 divisors (see below), whose sum is σ = 625624192. Its totient is φ = 469218132.

The previous prime is 547421113. The next prime is 547421167. The reversal of 547421161 is 161124745.

547421161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 161124745 = 5 ⋅32224949.

It is a cyclic number.

It is not a de Polignac number, because 547421161 - 2²³ = 539032553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (547421167) 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, 39101505 + ... + 39101518.

It is an arithmetic number, because the mean of its divisors is an integer number (156406048).

Almost surely, 2^547421161 is an apocalyptic number.

It is an amenable number.

547421161 is a deficient number, since it is larger than the sum of its proper divisors (78203031).

547421161 is an equidigital number, since it uses as much as digits as its factorization.

547421161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78203030.

The product of its digits is 6720, while the sum is 31.

The square root of 547421161 is about 23397.0331666218. The cubic root of 547421161 is about 818.0387199387.

The spelling of 547421161 in words is "five hundred forty-seven million, four hundred twenty-one thousand, one hundred sixty-one".