51640614 has 24 divisors (see below), whose sum is σ = 112115952. Its totient is φ = 17178480.

The previous prime is 51640601. The next prime is 51640621. The reversal of 51640614 is 41604615.

51640614 is a `hidden beast` number, since 5 + 1 + 6 + 40 + 614 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7087 + ... + 12389.

It is an arithmetic number, because the mean of its divisors is an integer number (4671498).

Almost surely, 2^51640614 is an apocalyptic number.

51640614 is an abundant number, since it is smaller than the sum of its proper divisors (60475338).

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

51640614 is a wasteful number, since it uses less digits than its factorization.

51640614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5852 (or 5849 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 51640614 is about 7186.1404105403. The cubic root of 51640614 is about 372.3892474368.

The spelling of 51640614 in words is "fifty-one million, six hundred forty thousand, six hundred fourteen".