546505381 has 4 divisors (see below), whose sum is σ = 547932672. Its totient is φ = 545078092.

The previous prime is 546505367. The next prime is 546505387. The reversal of 546505381 is 183505645.

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 546505381 - 2¹¹ = 546503333 is a prime.

It is a super-2 number, since 2×546505381² = 597336262923910322, which contains 22 as substring.

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 546505381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (546505387) 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, 713071 + ... + 713836.

It is an arithmetic number, because the mean of its divisors is an integer number (136983168).

Almost surely, 2^546505381 is an apocalyptic number.

It is an amenable number.

546505381 is a deficient number, since it is larger than the sum of its proper divisors (1427291).

546505381 is a wasteful number, since it uses less digits than its factorization.

546505381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427290.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 546505381 is about 23377.4545449243. The cubic root of 546505381 is about 817.5823000996.

It can be divided in two parts, 54650 and 5381, that added together give a triangular number (60031 = T₃₄₆).

The spelling of 546505381 in words is "five hundred forty-six million, five hundred five thousand, three hundred eighty-one".