51200089 has 2 divisors, whose sum is σ = 51200090. Its totient is φ = 51200088.

The previous prime is 51200069. The next prime is 51200099. The reversal of 51200089 is 98000215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49112064 + 2088025 = 7008^2 + 1445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51200089 is a prime.

It is a super-2 number, since 2×51200089² = 5242898227215842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51200069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25600044 + 25600045.

It is an arithmetic number, because the mean of its divisors is an integer number (25600045).

Almost surely, 2^51200089 is an apocalyptic number.

It is an amenable number.

51200089 is a deficient number, since it is larger than the sum of its proper divisors (1).

51200089 is an equidigital number, since it uses as much as digits as its factorization.

51200089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 51200089 is about 7155.4237470607. The cubic root of 51200089 is about 371.3273218459.

The spelling of 51200089 in words is "fifty-one million, two hundred thousand, eighty-nine".