53722247 has 2 divisors, whose sum is σ = 53722248. Its totient is φ = 53722246.

The previous prime is 53722243. The next prime is 53722267. The reversal of 53722247 is 74222735.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53722247 - 2² = 53722243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53722241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26861123 + 26861124.

It is an arithmetic number, because the mean of its divisors is an integer number (26861124).

Almost surely, 2^53722247 is an apocalyptic number.

53722247 is a deficient number, since it is larger than the sum of its proper divisors (1).

53722247 is an equidigital number, since it uses as much as digits as its factorization.

53722247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 32.

The square root of 53722247 is about 7329.5461660324. The cubic root of 53722247 is about 377.3271509605.

The spelling of 53722247 in words is "fifty-three million, seven hundred twenty-two thousand, two hundred forty-seven".