51500783 has 2 divisors, whose sum is σ = 51500784. Its totient is φ = 51500782.

The previous prime is 51500747. The next prime is 51500863. The reversal of 51500783 is 38700515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51500783 - 2⁶ = 51500719 is a prime.

It is a super-2 number, since 2×51500783² = 5304661299226178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51500983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25750391 + 25750392.

It is an arithmetic number, because the mean of its divisors is an integer number (25750392).

Almost surely, 2^51500783 is an apocalyptic number.

51500783 is a deficient number, since it is larger than the sum of its proper divisors (1).

51500783 is an equidigital number, since it uses as much as digits as its factorization.

51500783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 51500783 is about 7176.4046011913. The cubic root of 51500783 is about 372.0528285670.

The spelling of 51500783 in words is "fifty-one million, five hundred thousand, seven hundred eighty-three".