51122630 has 32 divisors (see below), whose sum is σ = 100475424. Its totient is φ = 18614016.

The previous prime is 51122593. The next prime is 51122633. The reversal of 51122630 is 3622115.

It is a super-2 number, since 2×51122630² = 5227046596233800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51122633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6797 + ... + 12183.

It is an arithmetic number, because the mean of its divisors is an integer number (3139857).

Almost surely, 2^51122630 is an apocalyptic number.

51122630 is a deficient number, since it is larger than the sum of its proper divisors (49352794).

51122630 is a wasteful number, since it uses less digits than its factorization.

51122630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 51122630 is about 7150.0090909033. The cubic root of 51122630 is about 371.1399708700.

Adding to 51122630 its reverse (3622115), we get a palindrome (54744745).

The spelling of 51122630 in words is "fifty-one million, one hundred twenty-two thousand, six hundred thirty".