51351101 has 4 divisors (see below), whose sum is σ = 54371772. Its totient is φ = 48330432.

The previous prime is 51351077. The next prime is 51351109. The reversal of 51351101 is 10115315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48288601 + 3062500 = 6949^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 51351101 - 2¹⁰ = 51350077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 3020653 = 51351101 / (5 + 1 + 3 + 5 + 1 + 1 + 0 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51351101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51351109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1510310 + ... + 1510343.

It is an arithmetic number, because the mean of its divisors is an integer number (13592943).

Almost surely, 2^51351101 is an apocalyptic number.

It is an amenable number.

51351101 is a deficient number, since it is larger than the sum of its proper divisors (3020671).

51351101 is a wasteful number, since it uses less digits than its factorization.

51351101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020670.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 51351101 is about 7165.9682527904. The cubic root of 51351101 is about 371.6920337230.

Adding to 51351101 its reverse (10115315), we get a palindrome (61466416).

The spelling of 51351101 in words is "fifty-one million, three hundred fifty-one thousand, one hundred one".