55734201521 has 2 divisors, whose sum is σ = 55734201522. Its totient is φ = 55734201520.

The previous prime is 55734201517. The next prime is 55734201533. The reversal of 55734201521 is 12510243755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52058810896 + 3675390625 = 228164^2 + 60625^2 .

It is a cyclic number.

It is not a de Polignac number, because 55734201521 - 2² = 55734201517 is a prime.

It is not a weakly prime, because it can be changed into another prime (55734203521) 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, 27867100760 + 27867100761.

It is an arithmetic number, because the mean of its divisors is an integer number (27867100761).

Almost surely, 2^55734201521 is an apocalyptic number.

It is an amenable number.

55734201521 is a deficient number, since it is larger than the sum of its proper divisors (1).

55734201521 is an equidigital number, since it uses as much as digits as its factorization.

55734201521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42000, while the sum is 35.

The spelling of 55734201521 in words is "fifty-five billion, seven hundred thirty-four million, two hundred one thousand, five hundred twenty-one".