51388051 has 8 divisors (see below), whose sum is σ = 60372144. Its totient is φ = 43122720.

The previous prime is 51388037. The next prime is 51388063. The reversal of 51388051 is 15088315.

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

It is a cyclic number.

It is not a de Polignac number, because 51388051 - 2⁵ = 51388019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51388021) 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 7 ways as a sum of consecutive naturals, for example, 179536 + ... + 179821.

It is an arithmetic number, because the mean of its divisors is an integer number (7546518).

Almost surely, 2^51388051 is an apocalyptic number.

51388051 is a deficient number, since it is larger than the sum of its proper divisors (8984093).

51388051 is a wasteful number, since it uses less digits than its factorization.

51388051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359381.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 51388051 is about 7168.5459474010. The cubic root of 51388051 is about 371.7811634434.

The spelling of 51388051 in words is "fifty-one million, three hundred eighty-eight thousand, fifty-one".