51324387 has 8 divisors (see below), whose sum is σ = 68468736. Its totient is φ = 34198152.

The previous prime is 51324373. The next prime is 51324389. The reversal of 51324387 is 78342315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51324387 - 2⁶ = 51324323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51324389) 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, 4878 + ... + 11244.

It is an arithmetic number, because the mean of its divisors is an integer number (8558592).

Almost surely, 2^51324387 is an apocalyptic number.

51324387 is a deficient number, since it is larger than the sum of its proper divisors (17144349).

51324387 is a wasteful number, since it uses less digits than its factorization.

51324387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9057.

The product of its digits is 20160, while the sum is 33.

The square root of 51324387 is about 7164.1040612208. The cubic root of 51324387 is about 371.6275683521.

The spelling of 51324387 in words is "fifty-one million, three hundred twenty-four thousand, three hundred eighty-seven".