51034409 has 2 divisors, whose sum is σ = 51034410. Its totient is φ = 51034408.

The previous prime is 51034397. The next prime is 51034427. The reversal of 51034409 is 90443015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30558784 + 20475625 = 5528^2 + 4525^2 .

It is a cyclic number.

It is not a de Polignac number, because 51034409 - 2⁴ = 51034393 is a prime.

It is not a weakly prime, because it can be changed into another prime (51034439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25517204 + 25517205.

It is an arithmetic number, because the mean of its divisors is an integer number (25517205).

Almost surely, 2^51034409 is an apocalyptic number.

It is an amenable number.

51034409 is a deficient number, since it is larger than the sum of its proper divisors (1).

51034409 is an equidigital number, since it uses as much as digits as its factorization.

51034409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 51034409 is about 7143.8371342018. The cubic root of 51034409 is about 370.9263590660.

The spelling of 51034409 in words is "fifty-one million, thirty-four thousand, four hundred nine".