51861114 has 32 divisors (see below), whose sum is σ = 115482240. Its totient is φ = 17251776.

The previous prime is 51861097. The next prime is 51861119. The reversal of 51861114 is 41116815.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (51861119) 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, 52267 + ... + 53249.

It is an arithmetic number, because the mean of its divisors is an integer number (3608820).

Almost surely, 2^51861114 is an apocalyptic number.

51861114 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51861114 is an abundant number, since it is smaller than the sum of its proper divisors (63621126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51861114 is a wasteful number, since it uses less digits than its factorization.

51861114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971 (or 1965 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 51861114 is about 7201.4661007325. The cubic root of 51861114 is about 372.9185158396.

Adding to 51861114 its reverse (41116815), we get a palindrome (92977929).

The spelling of 51861114 in words is "fifty-one million, eight hundred sixty-one thousand, one hundred fourteen".