51820373 has 8 divisors (see below), whose sum is σ = 57092256. Its totient is φ = 46642000.

The previous prime is 51820343. The next prime is 51820393. The reversal of 51820373 is 37302815.

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 51820373 - 2⁶ = 51820309 is a prime.

It is a super-4 number, since 4×51820373⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51820343) 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, 22211 + ... + 24432.

It is an arithmetic number, because the mean of its divisors is an integer number (7136532).

Almost surely, 2^51820373 is an apocalyptic number.

It is an amenable number.

51820373 is a deficient number, since it is larger than the sum of its proper divisors (5271883).

51820373 is a wasteful number, since it uses less digits than its factorization.

51820373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46755.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 51820373 is about 7198.6368848554. The cubic root of 51820373 is about 372.8208379440.

The spelling of 51820373 in words is "fifty-one million, eight hundred twenty thousand, three hundred seventy-three".