53074036921 has 2 divisors, whose sum is σ = 53074036922. Its totient is φ = 53074036920.

The previous prime is 53074036909. The next prime is 53074036931. The reversal of 53074036921 is 12963047035.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51772631296 + 1301405625 = 227536^2 + 36075^2 .

It is a cyclic number.

It is not a de Polignac number, because 53074036921 - 2¹³ = 53074028729 is a prime.

It is not a weakly prime, because it can be changed into another prime (53074036931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26537018460 + 26537018461.

It is an arithmetic number, because the mean of its divisors is an integer number (26537018461).

Almost surely, 2^53074036921 is an apocalyptic number.

It is an amenable number.

53074036921 is a deficient number, since it is larger than the sum of its proper divisors (1).

53074036921 is an equidigital number, since it uses as much as digits as its factorization.

53074036921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 53074036921 in words is "fifty-three billion, seventy-four million, thirty-six thousand, nine hundred twenty-one".