51293630 has 8 divisors (see below), whose sum is σ = 92328552. Its totient is φ = 20517448.

The previous prime is 51293629. The next prime is 51293633. The reversal of 51293630 is 3639215.

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 = 51293593 and 51293602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51293633) 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, 2564672 + ... + 2564691.

It is an arithmetic number, because the mean of its divisors is an integer number (11541069).

Almost surely, 2^51293630 is an apocalyptic number.

51293630 is a deficient number, since it is larger than the sum of its proper divisors (41034922).

51293630 is a wasteful number, since it uses less digits than its factorization.

51293630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129370.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 51293630 is about 7161.9571347502. The cubic root of 51293630 is about 371.5533188333.

The spelling of 51293630 in words is "fifty-one million, two hundred ninety-three thousand, six hundred thirty".