51484949 has 2 divisors, whose sum is σ = 51484950. Its totient is φ = 51484948.

The previous prime is 51484913. The next prime is 51484957. The reversal of 51484949 is 94948415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50665924 + 819025 = 7118^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 51484949 - 2²⁴ = 34707733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51444949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25742474 + 25742475.

It is an arithmetic number, because the mean of its divisors is an integer number (25742475).

Almost surely, 2^51484949 is an apocalyptic number.

It is an amenable number.

51484949 is a deficient number, since it is larger than the sum of its proper divisors (1).

51484949 is an equidigital number, since it uses as much as digits as its factorization.

51484949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The square root of 51484949 is about 7175.3013177148. The cubic root of 51484949 is about 372.0146952417.

It can be divided in two parts, 5148 and 4949, that multiplied together give a palindrome (25477452).

The spelling of 51484949 in words is "fifty-one million, four hundred eighty-four thousand, nine hundred forty-nine".