51468387 has 4 divisors (see below), whose sum is σ = 68624520. Its totient is φ = 34312256.

The previous prime is 51468349. The next prime is 51468409. The reversal of 51468387 is 78386415.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51468387 - 2⁷ = 51468259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51468317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8578062 + ... + 8578067.

It is an arithmetic number, because the mean of its divisors is an integer number (17156130).

Almost surely, 2^51468387 is an apocalyptic number.

51468387 is a deficient number, since it is larger than the sum of its proper divisors (17156133).

51468387 is a wasteful number, since it uses less digits than its factorization.

51468387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17156132.

The product of its digits is 161280, while the sum is 42.

The square root of 51468387 is about 7174.1471270110. The cubic root of 51468387 is about 371.9748002932.

The spelling of 51468387 in words is "fifty-one million, four hundred sixty-eight thousand, three hundred eighty-seven".