51971103 has 24 divisors (see below), whose sum is σ = 78174720. Its totient is φ = 33230400.

The previous prime is 51971089. The next prime is 51971123. The reversal of 51971103 is 30117915.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-51971103 is a prime.

It is a super-3 number, since 3×51971103³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51971123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44578 + ... + 45728.

It is an arithmetic number, because the mean of its divisors is an integer number (3257280).

Almost surely, 2^51971103 is an apocalyptic number.

51971103 is a deficient number, since it is larger than the sum of its proper divisors (26203617).

51971103 is a wasteful number, since it uses less digits than its factorization.

51971103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359 (or 1356 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 51971103 is about 7209.0986260420. The cubic root of 51971103 is about 373.1819628866.

The spelling of 51971103 in words is "fifty-one million, nine hundred seventy-one thousand, one hundred three".