53901495821 has 2 divisors, whose sum is σ = 53901495822. Its totient is φ = 53901495820.

The previous prime is 53901495793. The next prime is 53901495841. The reversal of 53901495821 is 12859410935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41174497225 + 12726998596 = 202915^2 + 112814^2 .

It is a cyclic number.

It is not a de Polignac number, because 53901495821 - 2³⁴ = 36721626637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53901495841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26950747910 + 26950747911.

It is an arithmetic number, because the mean of its divisors is an integer number (26950747911).

Almost surely, 2^53901495821 is an apocalyptic number.

It is an amenable number.

53901495821 is a deficient number, since it is larger than the sum of its proper divisors (1).

53901495821 is an equidigital number, since it uses as much as digits as its factorization.

53901495821 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 47.

The spelling of 53901495821 in words is "fifty-three billion, nine hundred one million, four hundred ninety-five thousand, eight hundred twenty-one".