51861383 has 8 divisors (see below), whose sum is σ = 60872352. Its totient is φ = 43250976.

The previous prime is 51861377. The next prime is 51861391. The reversal of 51861383 is 38316815.

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 51861383 - 2⁶ = 51861319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51867383) 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, 99860 + ... + 100377.

It is an arithmetic number, because the mean of its divisors is an integer number (7609044).

Almost surely, 2^51861383 is an apocalyptic number.

51861383 is a deficient number, since it is larger than the sum of its proper divisors (9010969).

51861383 is a wasteful number, since it uses less digits than its factorization.

51861383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200281.

The product of its digits is 17280, while the sum is 35.

The square root of 51861383 is about 7201.4847774608. The cubic root of 51861383 is about 372.9191606060.

The spelling of 51861383 in words is "fifty-one million, eight hundred sixty-one thousand, three hundred eighty-three".