51361101 has 16 divisors (see below), whose sum is σ = 83008320. Its totient is φ = 31127760.

The previous prime is 51361091. The next prime is 51361129. The reversal of 51361101 is 10116315.

Added to its reverse (10116315) it gives a triangular number (61477416 = T₁₁₀₈₈).

51361101 is a `hidden beast` number, since 51 + 3 + 611 + 0 + 1 = 666.

It is not a de Polignac number, because 51361101 - 2⁷ = 51360973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51361181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86170 + ... + 86763.

It is an arithmetic number, because the mean of its divisors is an integer number (5188020).

Almost surely, 2^51361101 is an apocalyptic number.

It is an amenable number.

51361101 is a deficient number, since it is larger than the sum of its proper divisors (31647219).

51361101 is a wasteful number, since it uses less digits than its factorization.

51361101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172953 (or 172947 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 51361101 is about 7166.6659612403. The cubic root of 51361101 is about 371.7161596522.

Adding to 51361101 its reverse (10116315), we get a palindrome (61477416).

The spelling of 51361101 in words is "fifty-one million, three hundred sixty-one thousand, one hundred one".