51216614 has 8 divisors (see below), whose sum is σ = 81344088. Its totient is φ = 24101920.

The previous prime is 51216611. The next prime is 51216617. The reversal of 51216614 is 41661215.

It is an interprime number because it is at equal distance from previous prime (51216611) and next prime (51216617).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51216611) 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, 753152 + ... + 753219.

It is an arithmetic number, because the mean of its divisors is an integer number (10168011).

Almost surely, 2^51216614 is an apocalyptic number.

51216614 is a deficient number, since it is larger than the sum of its proper divisors (30127474).

51216614 is a wasteful number, since it uses less digits than its factorization.

51216614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506390.

The product of its digits is 1440, while the sum is 26.

The square root of 51216614 is about 7156.5783723788. The cubic root of 51216614 is about 371.3672665939.

Adding to 51216614 its reverse (41661215), we get a palindrome (92877829).

The spelling of 51216614 in words is "fifty-one million, two hundred sixteen thousand, six hundred fourteen".