50913409 has 2 divisors, whose sum is σ = 50913410. Its totient is φ = 50913408.

The previous prime is 50913371. The next prime is 50913413. The reversal of 50913409 is 90431905.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50908225 + 5184 = 7135^2 + 72^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50913409 is a prime.

It is not a weakly prime, because it can be changed into another prime (50913479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25456704 + 25456705.

It is an arithmetic number, because the mean of its divisors is an integer number (25456705).

Almost surely, 2^50913409 is an apocalyptic number.

It is an amenable number.

50913409 is a deficient number, since it is larger than the sum of its proper divisors (1).

50913409 is an equidigital number, since it uses as much as digits as its factorization.

50913409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 50913409 is about 7135.3632703598. The cubic root of 50913409 is about 370.6329778736.

The spelling of 50913409 in words is "fifty million, nine hundred thirteen thousand, four hundred nine".