655451 has 8 divisors (see below), whose sum is σ = 680400. Its totient is φ = 631072.

The previous prime is 655439. The next prime is 655453. The reversal of 655451 is 154556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 655451 - 2⁶ = 655387 is a prime.

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 655451.

It is not an unprimeable number, because it can be changed into a prime (655453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4325 + ... + 4473.

It is an arithmetic number, because the mean of its divisors is an integer number (85050).

2⁶⁵⁵⁴⁵¹ is an apocalyptic number.

655451 is a deficient number, since it is larger than the sum of its proper divisors (24949).

655451 is a wasteful number, since it uses less digits than its factorization.

655451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285.

The product of its digits is 3000, while the sum is 26.

The square root of 655451 is about 809.5992835965. The cubic root of 655451 is about 86.8653839226.

The spelling of 655451 in words is "six hundred fifty-five thousand, four hundred fifty-one".