51308419 has 2 divisors, whose sum is σ = 51308420. Its totient is φ = 51308418.

The previous prime is 51308401. The next prime is 51308447. The reversal of 51308419 is 91480315.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51308419 is a prime.

It is a super-2 number, since 2×51308419² = 5265107720559122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51308459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25654209 + 25654210.

It is an arithmetic number, because the mean of its divisors is an integer number (25654210).

Almost surely, 2^51308419 is an apocalyptic number.

51308419 is a deficient number, since it is larger than the sum of its proper divisors (1).

51308419 is an equidigital number, since it uses as much as digits as its factorization.

51308419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 51308419 is about 7162.9895295191. The cubic root of 51308419 is about 371.5890242027.

The spelling of 51308419 in words is "fifty-one million, three hundred eight thousand, four hundred nineteen".