51706949 has 8 divisors (see below), whose sum is σ = 59149440. Its totient is φ = 44278416.

The previous prime is 51706943. The next prime is 51706973. The reversal of 51706949 is 94960715.

51706949 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 not a de Polignac number, because 51706949 - 2⁸ = 51706693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51706943) 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, 6287 + ... + 11955.

It is an arithmetic number, because the mean of its divisors is an integer number (7393680).

Almost surely, 2^51706949 is an apocalyptic number.

It is an amenable number.

51706949 is a deficient number, since it is larger than the sum of its proper divisors (7442491).

51706949 is a wasteful number, since it uses less digits than its factorization.

51706949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6979.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 51706949 is about 7190.7544110476. The cubic root of 51706949 is about 372.5486301989.

The spelling of 51706949 in words is "fifty-one million, seven hundred six thousand, nine hundred forty-nine".