51903249 has 16 divisors (see below), whose sum is σ = 72794112. Its totient is φ = 32831568.

The previous prime is 51903223. The next prime is 51903259. The reversal of 51903249 is 94230915.

It is not a de Polignac number, because 51903249 - 2⁷ = 51903121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51903259) 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, 5802 + ... + 11724.

It is an arithmetic number, because the mean of its divisors is an integer number (4549632).

Almost surely, 2^51903249 is an apocalyptic number.

It is an amenable number.

51903249 is a deficient number, since it is larger than the sum of its proper divisors (20890863).

51903249 is a wasteful number, since it uses less digits than its factorization.

51903249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6076.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 51903249 is about 7204.3909527454. The cubic root of 51903249 is about 373.0194821000.

The spelling of 51903249 in words is "fifty-one million, nine hundred three thousand, two hundred forty-nine".