51807962 has 4 divisors (see below), whose sum is σ = 77711946. Its totient is φ = 25903980.

The previous prime is 51807929. The next prime is 51807979. The reversal of 51807962 is 26970815.

51807962 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: 26970815 = 5 ⋅5394163.

It can be written as a sum of positive squares in only one way, i.e., 48846121 + 2961841 = 6989^2 + 1721^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12951989 + ... + 12951992.

Almost surely, 2^51807962 is an apocalyptic number.

51807962 is a deficient number, since it is larger than the sum of its proper divisors (25903984).

51807962 is a wasteful number, since it uses less digits than its factorization.

51807962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25903983.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 51807962 is about 7197.7747950321. The cubic root of 51807962 is about 372.7910719877.

The spelling of 51807962 in words is "fifty-one million, eight hundred seven thousand, nine hundred sixty-two".