604551 has 4 divisors (see below), whose sum is σ = 806072. Its totient is φ = 403032.

The previous prime is 604547. The next prime is 604559. The reversal of 604551 is 155406.

It is a happy number.

604551 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.

It is not a de Polignac number, because 604551 - 2² = 604547 is a prime.

It is a D-number.

It is a Duffinian number.

604551 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604559) 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, 100756 + ... + 100761.

It is an arithmetic number, because the mean of its divisors is an integer number (201518).

2⁶⁰⁴⁵⁵¹ is an apocalyptic number.

604551 is a deficient number, since it is larger than the sum of its proper divisors (201521).

604551 is a wasteful number, since it uses less digits than its factorization.

604551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201520.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 604551 is about 777.5287776025. The cubic root of 604551 is about 84.5559775212. Note that the first 3 decimals are identical.

Adding to 604551 its reverse (155406), we get a palindrome (759957).

The spelling of 604551 in words is "six hundred four thousand, five hundred fifty-one".