51962639 has 4 divisors (see below), whose sum is σ = 51992256. Its totient is φ = 51933024.

The previous prime is 51962633. The next prime is 51962717. The reversal of 51962639 is 93626915.

51962639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93626915 = 5 ⋅18725383.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51962639 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 51962596 and 51962605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51962633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11999 + ... + 15744.

It is an arithmetic number, because the mean of its divisors is an integer number (12998064).

Almost surely, 2^51962639 is an apocalyptic number.

51962639 is a deficient number, since it is larger than the sum of its proper divisors (29617).

51962639 is a wasteful number, since it uses less digits than its factorization.

51962639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29616.

The product of its digits is 87480, while the sum is 41.

The square root of 51962639 is about 7208.5115661973. The cubic root of 51962639 is about 373.1617030150.

The spelling of 51962639 in words is "fifty-one million, nine hundred sixty-two thousand, six hundred thirty-nine".