51651103 has 8 divisors (see below), whose sum is σ = 60469920. Its totient is φ = 43192320.

The previous prime is 51651023. The next prime is 51651109. The reversal of 51651103 is 30115615.

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

It is a cyclic number.

It is not a de Polignac number, because 51651103 - 2¹³ = 51642911 is a prime.

It is a super-2 number, since 2×51651103² = 5335672882233218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51651109) 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 7 ways as a sum of consecutive naturals, for example, 89698 + ... + 90271.

It is an arithmetic number, because the mean of its divisors is an integer number (7558740).

Almost surely, 2^51651103 is an apocalyptic number.

51651103 is a deficient number, since it is larger than the sum of its proper divisors (8818817).

51651103 is a wasteful number, since it uses less digits than its factorization.

51651103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180017.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 51651103 is about 7186.8701811011. The cubic root of 51651103 is about 372.4144583841.

Adding to 51651103 its reverse (30115615), we get a palindrome (81766718).

The spelling of 51651103 in words is "fifty-one million, six hundred fifty-one thousand, one hundred three".