51073207 has 4 divisors (see below), whose sum is σ = 52261000. Its totient is φ = 49885416.

The previous prime is 51073201. The next prime is 51073237. The reversal of 51073207 is 70237015.

51073207 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51073207 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 (51073201) 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, 593832 + ... + 593917.

It is an arithmetic number, because the mean of its divisors is an integer number (13065250).

Almost surely, 2^51073207 is an apocalyptic number.

51073207 is a deficient number, since it is larger than the sum of its proper divisors (1187793).

51073207 is a wasteful number, since it uses less digits than its factorization.

51073207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187792.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 51073207 is about 7146.5521057360. The cubic root of 51073207 is about 371.0203319745.

The spelling of 51073207 in words is "fifty-one million, seventy-three thousand, two hundred seven".