51158361 has 4 divisors (see below), whose sum is σ = 68211152. Its totient is φ = 34105572.

The previous prime is 51158333. The next prime is 51158363. The reversal of 51158361 is 16385115.

51158361 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51158361 - 2⁵ = 51158329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51158363) 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, 8526391 + ... + 8526396.

It is an arithmetic number, because the mean of its divisors is an integer number (17052788).

Almost surely, 2^51158361 is an apocalyptic number.

It is an amenable number.

51158361 is a deficient number, since it is larger than the sum of its proper divisors (17052791).

51158361 is a wasteful number, since it uses less digits than its factorization.

51158361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17052790.

The product of its digits is 3600, while the sum is 30.

The square root of 51158361 is about 7152.5073226107. The cubic root of 51158361 is about 371.2264173482.

The spelling of 51158361 in words is "fifty-one million, one hundred fifty-eight thousand, three hundred sixty-one".