51408903 has 16 divisors (see below), whose sum is σ = 84363776. Its totient is φ = 27116640.

The previous prime is 51408893. The next prime is 51408919. The reversal of 51408903 is 30980415.

It is not a de Polignac number, because 51408903 - 2⁵ = 51408871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51408953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93883 + ... + 94428.

It is an arithmetic number, because the mean of its divisors is an integer number (5272736).

Almost surely, 2^51408903 is an apocalyptic number.

51408903 is a deficient number, since it is larger than the sum of its proper divisors (32954873).

51408903 is a wasteful number, since it uses less digits than its factorization.

51408903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188334.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 51408903 is about 7170.0002092050. Note that the first 3 decimals coincide. The cubic root of 51408903 is about 371.8314431766.

The spelling of 51408903 in words is "fifty-one million, four hundred eight thousand, nine hundred three".