997552000051 has 2 divisors, whose sum is σ = 997552000052. Its totient is φ = 997552000050.

The previous prime is 997552000037. The next prime is 997552000057. The reversal of 997552000051 is 150000255799.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997552000051 - 2¹⁹ = 997551475763 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997551999971 and 997552000007.

It is not a weakly prime, because it can be changed into another prime (997552000057) 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, 498776000025 + 498776000026.

It is an arithmetic number, because the mean of its divisors is an integer number (498776000026).

Almost surely, 2^997552000051 is an apocalyptic number.

997552000051 is a deficient number, since it is larger than the sum of its proper divisors (1).

997552000051 is an equidigital number, since it uses as much as digits as its factorization.

997552000051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141750, while the sum is 43.

The spelling of 997552000051 in words is "nine hundred ninety-seven billion, five hundred fifty-two million, fifty-one", and thus it is an aban number.