51443903 has 8 divisors (see below), whose sum is σ = 59599008. Its totient is φ = 43490304.

The previous prime is 51443891. The next prime is 51443927. The reversal of 51443903 is 30934415.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51443903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51443983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49826 + ... + 50847.

It is an arithmetic number, because the mean of its divisors is an integer number (7449876).

Almost surely, 2^51443903 is an apocalyptic number.

51443903 is a deficient number, since it is larger than the sum of its proper divisors (8155105).

51443903 is a wasteful number, since it uses less digits than its factorization.

51443903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100753.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 51443903 is about 7172.4405190981. The cubic root of 51443903 is about 371.9158069571.

The spelling of 51443903 in words is "fifty-one million, four hundred forty-three thousand, nine hundred three".