253720273 has 2 divisors, whose sum is σ = 253720274. Its totient is φ = 253720272.

The previous prime is 253720183. The next prime is 253720279. The reversal of 253720273 is 372027352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253191744 + 528529 = 15912^2 + 727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253720273 is a prime.

It is equal to p_13871560 and since 253720273 and 13871560 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (253720279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126860136 + 126860137.

It is an arithmetic number, because the mean of its divisors is an integer number (126860137).

Almost surely, 2^253720273 is an apocalyptic number.

It is an amenable number.

253720273 is a deficient number, since it is larger than the sum of its proper divisors (1).

253720273 is an equidigital number, since it uses as much as digits as its factorization.

253720273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 31.

The square root of 253720273 is about 15928.5992165036. The cubic root of 253720273 is about 633.0699850329.

The spelling of 253720273 in words is "two hundred fifty-three million, seven hundred twenty thousand, two hundred seventy-three".