51386073 has 8 divisors (see below), whose sum is σ = 69193536. Its totient is φ = 33918000.

The previous prime is 51386063. The next prime is 51386107. The reversal of 51386073 is 37068315.

It is a happy number.

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

It is not a de Polignac number, because 51386073 - 2⁹ = 51385561 is a prime.

It is a super-2 number, since 2×51386073² = 5281056996722658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51386033) 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, 84493 + ... + 85098.

It is an arithmetic number, because the mean of its divisors is an integer number (8649192).

Almost surely, 2^51386073 is an apocalyptic number.

It is an amenable number.

51386073 is a deficient number, since it is larger than the sum of its proper divisors (17807463).

51386073 is a wasteful number, since it uses less digits than its factorization.

51386073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169695.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 51386073 is about 7168.4079822510. The cubic root of 51386073 is about 371.7763932516.

It can be divided in two parts, 5138 and 6073, that added together give a palindrome (11211).

The spelling of 51386073 in words is "fifty-one million, three hundred eighty-six thousand, seventy-three".