51383015 has 4 divisors (see below), whose sum is σ = 61659624. Its totient is φ = 41106408.

The previous prime is 51383009. The next prime is 51383029. The reversal of 51383015 is 51038315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51383015 - 2⁶ = 51382951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5138297 + ... + 5138306.

It is an arithmetic number, because the mean of its divisors is an integer number (15414906).

Almost surely, 2^51383015 is an apocalyptic number.

51383015 is a deficient number, since it is larger than the sum of its proper divisors (10276609).

51383015 is a wasteful number, since it uses less digits than its factorization.

51383015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10276608.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 51383015 is about 7168.1946820661. The cubic root of 51383015 is about 371.7690182653.

The spelling of 51383015 in words is "fifty-one million, three hundred eighty-three thousand, fifteen".