65021273 has 2 divisors, whose sum is σ = 65021274. Its totient is φ = 65021272.

The previous prime is 65021267. The next prime is 65021279. The reversal of 65021273 is 37212056.

It is a balanced prime because it is at equal distance from previous prime (65021267) and next prime (65021279).

It can be written as a sum of positive squares in only one way, i.e., 38105929 + 26915344 = 6173^2 + 5188^2 .

It is a cyclic number.

It is not a de Polignac number, because 65021273 - 2⁸ = 65021017 is a prime.

It is not a weakly prime, because it can be changed into another prime (65021279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32510636 + 32510637.

It is an arithmetic number, because the mean of its divisors is an integer number (32510637).

Almost surely, 2^65021273 is an apocalyptic number.

It is an amenable number.

65021273 is a deficient number, since it is larger than the sum of its proper divisors (1).

65021273 is an equidigital number, since it uses as much as digits as its factorization.

65021273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 65021273 is about 8063.5769358269. The cubic root of 65021273 is about 402.1164340998.

The spelling of 65021273 in words is "sixty-five million, twenty-one thousand, two hundred seventy-three".