51353149 has 2 divisors, whose sum is σ = 51353150. Its totient is φ = 51353148.

The previous prime is 51353123. The next prime is 51353153. The reversal of 51353149 is 94135315.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42902500 + 8450649 = 6550^2 + 2907^2 .

It is a cyclic number.

It is not a de Polignac number, because 51353149 - 2²³ = 42964541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51353149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51353249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25676574 + 25676575.

It is an arithmetic number, because the mean of its divisors is an integer number (25676575).

Almost surely, 2^51353149 is an apocalyptic number.

It is an amenable number.

51353149 is a deficient number, since it is larger than the sum of its proper divisors (1).

51353149 is an equidigital number, since it uses as much as digits as its factorization.

51353149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 31.

The square root of 51353149 is about 7166.1111490124. Note that the first 4 decimals coincide. The cubic root of 51353149 is about 371.6969749683.

The spelling of 51353149 in words is "fifty-one million, three hundred fifty-three thousand, one hundred forty-nine".