51550807 has 16 divisors (see below), whose sum is σ = 64433664. Its totient is φ = 40068000.

The previous prime is 51550801. The next prime is 51550813. The reversal of 51550807 is 70805515.

51550807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51550801) and next prime (51550813).

It is not a de Polignac number, because 51550807 - 2¹¹ = 51548759 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 (51550801) 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 15 ways as a sum of consecutive naturals, for example, 48057 + ... + 49117.

It is an arithmetic number, because the mean of its divisors is an integer number (4027104).

Almost surely, 2^51550807 is an apocalyptic number.

51550807 is a deficient number, since it is larger than the sum of its proper divisors (12882857).

51550807 is a wasteful number, since it uses less digits than its factorization.

51550807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710.

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 51550807 is about 7179.8890659954. The cubic root of 51550807 is about 372.1732509949.

The spelling of 51550807 in words is "fifty-one million, five hundred fifty thousand, eight hundred seven".