51909502 has 8 divisors (see below), whose sum is σ = 78024312. Its totient is φ = 25901400.

The previous prime is 51909499. The next prime is 51909503. The reversal of 51909502 is 20590915.

51909502 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (51909503) 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 3 ways as a sum of consecutive naturals, for example, 25449 + ... + 27412.

It is an arithmetic number, because the mean of its divisors is an integer number (9753039).

Almost surely, 2^51909502 is an apocalyptic number.

51909502 is a deficient number, since it is larger than the sum of its proper divisors (26114810).

51909502 is a wasteful number, since it uses less digits than its factorization.

51909502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53354.

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 51909502 is about 7204.8249111273. The cubic root of 51909502 is about 373.0344612340.

The spelling of 51909502 in words is "fifty-one million, nine hundred nine thousand, five hundred two".