55321253 has 8 divisors (see below), whose sum is σ = 61187448. Its totient is φ = 49685184.

The previous prime is 55321223. The next prime is 55321271. The reversal of 55321253 is 35212355.

It can be written as a sum of positive squares in 4 ways, for example, as 23251684 + 32069569 = 4822^2 + 5663^2 .

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 55321253 - 2⁸ = 55320997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55321223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57026 + ... + 57987.

It is an arithmetic number, because the mean of its divisors is an integer number (7648431).

Almost surely, 2^55321253 is an apocalyptic number.

It is an amenable number.

55321253 is a deficient number, since it is larger than the sum of its proper divisors (5866195).

55321253 is a wasteful number, since it uses less digits than its factorization.

55321253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115063.

The product of its digits is 4500, while the sum is 26.

The square root of 55321253 is about 7437.8258247958. The cubic root of 55321253 is about 381.0342393618.

The spelling of 55321253 in words is "fifty-five million, three hundred twenty-one thousand, two hundred fifty-three".