51001630 has 16 divisors (see below), whose sum is σ = 92751120. Its totient is φ = 20189952.

The previous prime is 51001619. The next prime is 51001729. The reversal of 51001630 is 3610015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25320 + ... + 27259.

It is an arithmetic number, because the mean of its divisors is an integer number (5796945).

Almost surely, 2^51001630 is an apocalyptic number.

51001630 is a deficient number, since it is larger than the sum of its proper divisors (41749490).

51001630 is a wasteful number, since it uses less digits than its factorization.

51001630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52683.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 51001630 is about 7141.5425504578. The cubic root of 51001630 is about 370.8469276953.

Adding to 51001630 its reverse (3610015), we get a palindrome (54611645).

The spelling of 51001630 in words is "fifty-one million, one thousand, six hundred thirty".