51216341 has 8 divisors (see below), whose sum is σ = 56707104. Its totient is φ = 45864720.

The previous prime is 51216317. The next prime is 51216353. The reversal of 51216341 is 14361215.

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

It is not a de Polignac number, because 51216341 - 2¹⁴ = 51199957 is a prime.

It is a super-2 number, since 2×51216341² = 5246227170856562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51216301) by changing a digit.

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, 34010 + ... + 35483.

It is an arithmetic number, because the mean of its divisors is an integer number (7088388).

Almost surely, 2^51216341 is an apocalyptic number.

It is an amenable number.

51216341 is a deficient number, since it is larger than the sum of its proper divisors (5490763).

51216341 is a wasteful number, since it uses less digits than its factorization.

51216341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69571.

The product of its digits is 720, while the sum is 23.

The square root of 51216341 is about 7156.5592989928. The cubic root of 51216341 is about 371.3666067595.

Adding to 51216341 its reverse (14361215), we get a palindrome (65577556).

The spelling of 51216341 in words is "fifty-one million, two hundred sixteen thousand, three hundred forty-one".