51279903 has 12 divisors (see below), whose sum is σ = 77291760. Its totient is φ = 32700096.

The previous prime is 51279887. The next prime is 51279911. The reversal of 51279903 is 30997215.

It is not a de Polignac number, because 51279903 - 2⁴ = 51279887 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51279913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123658 + ... + 124071.

It is an arithmetic number, because the mean of its divisors is an integer number (6440980).

Almost surely, 2^51279903 is an apocalyptic number.

51279903 is a deficient number, since it is larger than the sum of its proper divisors (26011857).

51279903 is a wasteful number, since it uses less digits than its factorization.

51279903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247758 (or 247755 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 51279903 is about 7160.9987431922. The cubic root of 51279903 is about 371.5201713290.

The spelling of 51279903 in words is "fifty-one million, two hundred seventy-nine thousand, nine hundred three".