51504359 has 2 divisors, whose sum is σ = 51504360. Its totient is φ = 51504358.

The previous prime is 51504329. The next prime is 51504379. The reversal of 51504359 is 95340515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51504359 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51504329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25752179 + 25752180.

It is an arithmetic number, because the mean of its divisors is an integer number (25752180).

Almost surely, 2^51504359 is an apocalyptic number.

51504359 is a deficient number, since it is larger than the sum of its proper divisors (1).

51504359 is an equidigital number, since it uses as much as digits as its factorization.

51504359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 51504359 is about 7176.6537466984. The cubic root of 51504359 is about 372.0614396343.

The spelling of 51504359 in words is "fifty-one million, five hundred four thousand, three hundred fifty-nine".