51497783 has 2 divisors, whose sum is σ = 51497784. Its totient is φ = 51497782.

The previous prime is 51497729. The next prime is 51497801. The reversal of 51497783 is 38779415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51497783 - 2⁸ = 51497527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51497723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25748891 + 25748892.

It is an arithmetic number, because the mean of its divisors is an integer number (25748892).

Almost surely, 2^51497783 is an apocalyptic number.

51497783 is a deficient number, since it is larger than the sum of its proper divisors (1).

51497783 is an equidigital number, since it uses as much as digits as its factorization.

51497783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The square root of 51497783 is about 7176.1955798320. The cubic root of 51497783 is about 372.0456042098.

The spelling of 51497783 in words is "fifty-one million, four hundred ninety-seven thousand, seven hundred eighty-three".