54402251 has 2 divisors, whose sum is σ = 54402252. Its totient is φ = 54402250.

The previous prime is 54402239. The next prime is 54402269. The reversal of 54402251 is 15220445.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54402251 - 2²² = 50207947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54402211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27201125 + 27201126.

It is an arithmetic number, because the mean of its divisors is an integer number (27201126).

Almost surely, 2^54402251 is an apocalyptic number.

54402251 is a deficient number, since it is larger than the sum of its proper divisors (1).

54402251 is an equidigital number, since it uses as much as digits as its factorization.

54402251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 54402251 is about 7375.7881612747. The cubic root of 54402251 is about 378.9125210297.

Adding to 54402251 its reverse (15220445), we get a palindrome (69622696).

The spelling of 54402251 in words is "fifty-four million, four hundred two thousand, two hundred fifty-one".