51953261 has 2 divisors, whose sum is σ = 51953262. Its totient is φ = 51953260.

The previous prime is 51953257. The next prime is 51953267. The reversal of 51953261 is 16235915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37589161 + 14364100 = 6131^2 + 3790^2 .

It is a cyclic number.

It is not a de Polignac number, because 51953261 - 2² = 51953257 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51953267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25976630 + 25976631.

It is an arithmetic number, because the mean of its divisors is an integer number (25976631).

Almost surely, 2^51953261 is an apocalyptic number.

It is an amenable number.

51953261 is a deficient number, since it is larger than the sum of its proper divisors (1).

51953261 is an equidigital number, since it uses as much as digits as its factorization.

51953261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 32.

The square root of 51953261 is about 7207.8610558195. The cubic root of 51953261 is about 373.1392527759.

The spelling of 51953261 in words is "fifty-one million, nine hundred fifty-three thousand, two hundred sixty-one".