51745949 has 8 divisors (see below), whose sum is σ = 54980640. Its totient is φ = 48562416.

The previous prime is 51745933. The next prime is 51745951. The reversal of 51745949 is 94954715.

51745949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51745949 - 2⁴ = 51745933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51745979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10694 + ... + 14759.

It is an arithmetic number, because the mean of its divisors is an integer number (6872580).

Almost surely, 2^51745949 is an apocalyptic number.

It is an amenable number.

51745949 is a deficient number, since it is larger than the sum of its proper divisors (3234691).

51745949 is a wasteful number, since it uses less digits than its factorization.

51745949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25579.

The product of its digits is 226800, while the sum is 44.

The square root of 51745949 is about 7193.4657154949. The cubic root of 51745949 is about 372.6422716756.

The spelling of 51745949 in words is "fifty-one million, seven hundred forty-five thousand, nine hundred forty-nine".