51394641 has 16 divisors (see below), whose sum is σ = 72403200. Its totient is φ = 32375168.

The previous prime is 51394633. The next prime is 51394643. The reversal of 51394641 is 14649315.

It is a cyclic number.

It is not a de Polignac number, because 51394641 - 2³ = 51394633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51394643) 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, 2196 + ... + 10373.

It is an arithmetic number, because the mean of its divisors is an integer number (4525200).

Almost surely, 2^51394641 is an apocalyptic number.

It is an amenable number.

51394641 is a deficient number, since it is larger than the sum of its proper divisors (21008559).

51394641 is a wasteful number, since it uses less digits than its factorization.

51394641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12648.

The product of its digits is 12960, while the sum is 33.

The square root of 51394641 is about 7169.0055795766. The cubic root of 51394641 is about 371.7970551608.

The spelling of 51394641 in words is "fifty-one million, three hundred ninety-four thousand, six hundred forty-one".