55610321 has 8 divisors (see below), whose sum is σ = 63040320. Its totient is φ = 48630672.

The previous prime is 55610299. The next prime is 55610327. The reversal of 55610321 is 12301655.

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 55610321 - 2⁶ = 55610257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55610327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112325 + ... + 112818.

It is an arithmetic number, because the mean of its divisors is an integer number (7880040).

Almost surely, 2^55610321 is an apocalyptic number.

It is an amenable number.

55610321 is a deficient number, since it is larger than the sum of its proper divisors (7429999).

55610321 is a wasteful number, since it uses less digits than its factorization.

55610321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225175.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 55610321 is about 7457.2327977608. The cubic root of 55610321 is about 381.6967545760.

Adding to 55610321 its reverse (12301655), we get a palindrome (67911976).

The spelling of 55610321 in words is "fifty-five million, six hundred ten thousand, three hundred twenty-one".