51613630 has 8 divisors (see below), whose sum is σ = 92904552. Its totient is φ = 20645448.

The previous prime is 51613621. The next prime is 51613637. The reversal of 51613630 is 3631615.

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

It is a junction number, because it is equal to n+sod(n) for n = 51613595 and 51613604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51613637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2580672 + ... + 2580691.

It is an arithmetic number, because the mean of its divisors is an integer number (11613069).

Almost surely, 2^51613630 is an apocalyptic number.

51613630 is a deficient number, since it is larger than the sum of its proper divisors (41290922).

51613630 is a wasteful number, since it uses less digits than its factorization.

51613630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5161370.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 51613630 is about 7184.2626622361. The cubic root of 51613630 is about 372.3243740654.

The spelling of 51613630 in words is "fifty-one million, six hundred thirteen thousand, six hundred thirty".