51073361 has 4 divisors (see below), whose sum is σ = 51225252. Its totient is φ = 50921472.

The previous prime is 51073339. The next prime is 51073369. The reversal of 51073361 is 16337015.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22515025 + 28558336 = 4745^2 + 5344^2 .

It is a cyclic number.

It is not a de Polignac number, because 51073361 - 2¹⁸ = 50811217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51073361.

It is not an unprimeable number, because it can be changed into a prime (51073369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75440 + ... + 76113.

It is an arithmetic number, because the mean of its divisors is an integer number (12806313).

Almost surely, 2^51073361 is an apocalyptic number.

It is an amenable number.

51073361 is a deficient number, since it is larger than the sum of its proper divisors (151891).

51073361 is a wasteful number, since it uses less digits than its factorization.

51073361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151890.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 51073361 is about 7146.5628801543. The cubic root of 51073361 is about 371.0207048841.

The spelling of 51073361 in words is "fifty-one million, seventy-three thousand, three hundred sixty-one".