51761145 has 8 divisors (see below), whose sum is σ = 82817856. Its totient is φ = 27605936.

The previous prime is 51761117. The next prime is 51761153. The reversal of 51761145 is 54116715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51761145 - 2⁸ = 51760889 is a prime.

It is a super-2 number, since 2×51761145² = 5358432263422050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1725357 + ... + 1725386.

It is an arithmetic number, because the mean of its divisors is an integer number (10352232).

Almost surely, 2^51761145 is an apocalyptic number.

It is an amenable number.

51761145 is a deficient number, since it is larger than the sum of its proper divisors (31056711).

51761145 is a wasteful number, since it uses less digits than its factorization.

51761145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450751.

The product of its digits is 4200, while the sum is 30.

The square root of 51761145 is about 7194.5218743152. The cubic root of 51761145 is about 372.6787454985.

The spelling of 51761145 in words is "fifty-one million, seven hundred sixty-one thousand, one hundred forty-five".