51395783 has 2 divisors, whose sum is σ = 51395784. Its totient is φ = 51395782.

The previous prime is 51395749. The next prime is 51395803. The reversal of 51395783 is 38759315.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51395783 - 2¹² = 51391687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51395783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51395983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25697891 + 25697892.

It is an arithmetic number, because the mean of its divisors is an integer number (25697892).

Almost surely, 2^51395783 is an apocalyptic number.

51395783 is a deficient number, since it is larger than the sum of its proper divisors (1).

51395783 is an equidigital number, since it uses as much as digits as its factorization.

51395783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 41.

The square root of 51395783 is about 7169.0852275587. The cubic root of 51395783 is about 371.7998089439.

The spelling of 51395783 in words is "fifty-one million, three hundred ninety-five thousand, seven hundred eighty-three".