51101361 has 40 divisors (see below), whose sum is σ = 80661504. Its totient is φ = 32192640.

The previous prime is 51101333. The next prime is 51101363. The reversal of 51101361 is 16310115.

It is not a de Polignac number, because 51101361 - 2¹³ = 51093169 is a prime.

It is a super-2 number, since 2×51101361² = 5222698192104642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51101363) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 117801 + ... + 118233.

Almost surely, 2^51101361 is an apocalyptic number.

It is an amenable number.

51101361 is a deficient number, since it is larger than the sum of its proper divisors (29560143).

51101361 is a wasteful number, since it uses less digits than its factorization.

51101361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523 (or 514 counting only the distinct ones).

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

The square root of 51101361 is about 7148.5215954070. The cubic root of 51101361 is about 371.0884941821.

Adding to 51101361 its reverse (16310115), we get a palindrome (67411476).

The spelling of 51101361 in words is "fifty-one million, one hundred one thousand, three hundred sixty-one".