66248053 has 2 divisors, whose sum is σ = 66248054. Its totient is φ = 66248052.

The previous prime is 66248047. The next prime is 66248069. The reversal of 66248053 is 35084266.

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., 51022449 + 15225604 = 7143^2 + 3902^2 .

It is a cyclic number.

It is not a de Polignac number, because 66248053 - 2²¹ = 64150901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66248033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33124026 + 33124027.

It is an arithmetic number, because the mean of its divisors is an integer number (33124027).

Almost surely, 2^66248053 is an apocalyptic number.

It is an amenable number.

66248053 is a deficient number, since it is larger than the sum of its proper divisors (1).

66248053 is an equidigital number, since it uses as much as digits as its factorization.

66248053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 66248053 is about 8139.2906939118. The cubic root of 66248053 is about 404.6296528070.

The spelling of 66248053 in words is "sixty-six million, two hundred forty-eight thousand, fifty-three".