53890651261 has 2 divisors, whose sum is σ = 53890651262. Its totient is φ = 53890651260.

The previous prime is 53890651259. The next prime is 53890651277. The reversal of 53890651261 is 16215609835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42076265625 + 11814385636 = 205125^2 + 108694^2 .

It is a cyclic number.

It is not a de Polignac number, because 53890651261 - 2¹ = 53890651259 is a prime.

Together with 53890651259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53890651961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26945325630 + 26945325631.

It is an arithmetic number, because the mean of its divisors is an integer number (26945325631).

Almost surely, 2^53890651261 is an apocalyptic number.

It is an amenable number.

53890651261 is a deficient number, since it is larger than the sum of its proper divisors (1).

53890651261 is an equidigital number, since it uses as much as digits as its factorization.

53890651261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 53890651261 in words is "fifty-three billion, eight hundred ninety million, six hundred fifty-one thousand, two hundred sixty-one".