51010994 has 4 divisors (see below), whose sum is σ = 76516494. Its totient is φ = 25505496.

The previous prime is 51010961. The next prime is 51010997. The reversal of 51010994 is 49901015.

51010994 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.

It can be written as a sum of positive squares in only one way, i.e., 46444225 + 4566769 = 6815^2 + 2137^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51010997) 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 as a sum of consecutive naturals, namely, 12752747 + ... + 12752750.

Almost surely, 2^51010994 is an apocalyptic number.

51010994 is a deficient number, since it is larger than the sum of its proper divisors (25505500).

51010994 is a wasteful number, since it uses less digits than its factorization.

51010994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25505499.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 51010994 is about 7142.1981210269. The cubic root of 51010994 is about 370.8696223826.

The spelling of 51010994 in words is "fifty-one million, ten thousand, nine hundred ninety-four".