51613628 has 24 divisors (see below), whose sum is σ = 99891120. Its totient is φ = 23137920.

The previous prime is 51613621. The next prime is 51613637. The reversal of 51613628 is 82631615.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51613594 and 51613603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51613621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4823 + ... + 11246.

It is an arithmetic number, because the mean of its divisors is an integer number (4162130).

Almost surely, 2^51613628 is an apocalyptic number.

It is an amenable number.

51613628 is a deficient number, since it is larger than the sum of its proper divisors (48277492).

51613628 is a wasteful number, since it uses less digits than its factorization.

51613628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16157 (or 16155 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 51613628 is about 7184.2625230430. The cubic root of 51613628 is about 372.3243692562.

The spelling of 51613628 in words is "fifty-one million, six hundred thirteen thousand, six hundred twenty-eight".