51102111 has 8 divisors (see below), whose sum is σ = 68798080. Its totient is φ = 33737112.

The previous prime is 51102049. The next prime is 51102127. The reversal of 51102111 is 11120115.

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

It is not a de Polignac number, because 51102111 - 2¹⁰ = 51101087 is a prime.

It is a super-2 number, since 2×51102111² = 5222851497312642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51102131) 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, 82381 + ... + 82998.

It is an arithmetic number, because the mean of its divisors is an integer number (8599760).

Almost surely, 2^51102111 is an apocalyptic number.

51102111 is a deficient number, since it is larger than the sum of its proper divisors (17695969).

51102111 is a wasteful number, since it uses less digits than its factorization.

51102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165485.

The product of its (nonzero) digits is 10, while the sum is 12.

The square root of 51102111 is about 7148.5740536138. The cubic root of 51102111 is about 371.0903096263.

Adding to 51102111 its reverse (11120115), we get a palindrome (62222226).

The spelling of 51102111 in words is "fifty-one million, one hundred two thousand, one hundred eleven".