54721253 has 2 divisors, whose sum is σ = 54721254. Its totient is φ = 54721252.

The previous prime is 54721243. The next prime is 54721279. The reversal of 54721253 is 35212745.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53684929 + 1036324 = 7327^2 + 1018^2 .

It is a cyclic number.

It is not a de Polignac number, because 54721253 - 2²⁴ = 37944037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54721213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27360626 + 27360627.

It is an arithmetic number, because the mean of its divisors is an integer number (27360627).

Almost surely, 2^54721253 is an apocalyptic number.

It is an amenable number.

54721253 is a deficient number, since it is larger than the sum of its proper divisors (1).

54721253 is an equidigital number, since it uses as much as digits as its factorization.

54721253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 29.

The square root of 54721253 is about 7397.3814961782. The cubic root of 54721253 is about 379.6516960814.

Adding to 54721253 its reverse (35212745), we get a palindrome (89933998).

The spelling of 54721253 in words is "fifty-four million, seven hundred twenty-one thousand, two hundred fifty-three".