51261103 has 8 divisors (see below), whose sum is σ = 54425088. Its totient is φ = 48113664.

The previous prime is 51261083. The next prime is 51261109. The reversal of 51261103 is 30116215.

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 51261103 - 2⁹ = 51260591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51261109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2575 + ... + 10447.

It is an arithmetic number, because the mean of its divisors is an integer number (6803136).

Almost surely, 2^51261103 is an apocalyptic number.

51261103 is a deficient number, since it is larger than the sum of its proper divisors (3163985).

51261103 is a wasteful number, since it uses less digits than its factorization.

51261103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8273.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 51261103 is about 7159.6859568001. The cubic root of 51261103 is about 371.4747641127.

Adding to 51261103 its reverse (30116215), we get a palindrome (81377318).

The spelling of 51261103 in words is "fifty-one million, two hundred sixty-one thousand, one hundred three".