546778426 has 4 divisors (see below), whose sum is σ = 820167642. Its totient is φ = 273389212.

The previous prime is 546778423. The next prime is 546778433. The reversal of 546778426 is 624877645.

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

It can be written as a sum of positive squares in only one way, i.e., 523265625 + 23512801 = 22875^2 + 4849^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 546778426.

It is not an unprimeable number, because it can be changed into a prime (546778423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136694605 + ... + 136694608.

Almost surely, 2^546778426 is an apocalyptic number.

546778426 is a deficient number, since it is larger than the sum of its proper divisors (273389216).

546778426 is a wasteful number, since it uses less digits than its factorization.

546778426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273389215.

The product of its digits is 2257920, while the sum is 49.

The square root of 546778426 is about 23383.2937371962. The cubic root of 546778426 is about 817.7184375769.

The spelling of 546778426 in words is "five hundred forty-six million, seven hundred seventy-eight thousand, four hundred twenty-six".