51396616 has 32 divisors (see below), whose sum is σ = 100154880. Its totient is φ = 24707200.

The previous prime is 51396607. The next prime is 51396617. The reversal of 51396616 is 61669315.

It is a super-2 number, since 2×51396616² = 5283224272502912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51396617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22185 + ... + 24391.

It is an arithmetic number, because the mean of its divisors is an integer number (3129840).

Almost surely, 2^51396616 is an apocalyptic number.

It is an amenable number.

51396616 is a deficient number, since it is larger than the sum of its proper divisors (48758264).

51396616 is a wasteful number, since it uses less digits than its factorization.

51396616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325 (or 2321 counting only the distinct ones).

The product of its digits is 29160, while the sum is 37.

The square root of 51396616 is about 7169.1433239962. The cubic root of 51396616 is about 371.8018175884.

The spelling of 51396616 in words is "fifty-one million, three hundred ninety-six thousand, six hundred sixteen".