51666104 has 32 divisors (see below), whose sum is σ = 111373920. Its totient is φ = 22010496.

The previous prime is 51666103. The next prime is 51666137. The reversal of 51666104 is 40166615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51666101) 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, 7022 + ... + 12354.

It is an arithmetic number, because the mean of its divisors is an integer number (3480435).

Almost surely, 2^51666104 is an apocalyptic number.

It is an amenable number.

51666104 is an abundant number, since it is smaller than the sum of its proper divisors (59707816).

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

51666104 is a wasteful number, since it uses less digits than its factorization.

51666104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5519 (or 5515 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 51666104 is about 7187.9137446132. The cubic root of 51666104 is about 372.4505082663.

The spelling of 51666104 in words is "fifty-one million, six hundred sixty-six thousand, one hundred four".