51022949 has 2 divisors, whose sum is σ = 51022950. Its totient is φ = 51022948.

The previous prime is 51022927. The next prime is 51022957. The reversal of 51022949 is 94922015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49773025 + 1249924 = 7055^2 + 1118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51022949 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 (51022549) 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, 25511474 + 25511475.

It is an arithmetic number, because the mean of its divisors is an integer number (25511475).

Almost surely, 2^51022949 is an apocalyptic number.

It is an amenable number.

51022949 is a deficient number, since it is larger than the sum of its proper divisors (1).

51022949 is an equidigital number, since it uses as much as digits as its factorization.

51022949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 51022949 is about 7143.0349992143. The cubic root of 51022949 is about 370.8985926082.

The spelling of 51022949 in words is "fifty-one million, twenty-two thousand, nine hundred forty-nine".