546653981 has 4 divisors (see below), whose sum is σ = 546778752. Its totient is φ = 546529212.

The previous prime is 546653977. The next prime is 546654013. The reversal of 546653981 is 189356645.

It is a happy number.

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 546653981 - 2² = 546653977 is a prime.

It is a super-2 number, since 2×546653981² = 597661149886296722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (546653911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55565 + ... + 64658.

It is an arithmetic number, because the mean of its divisors is an integer number (136694688).

Almost surely, 2^546653981 is an apocalyptic number.

It is an amenable number.

546653981 is a deficient number, since it is larger than the sum of its proper divisors (124771).

546653981 is a wasteful number, since it uses less digits than its factorization.

546653981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124770.

The product of its digits is 777600, while the sum is 47.

The square root of 546653981 is about 23380.6326047864. The cubic root of 546653981 is about 817.6563961799.

The spelling of 546653981 in words is "five hundred forty-six million, six hundred fifty-three thousand, nine hundred eighty-one".