51911130 has 16 divisors (see below), whose sum is σ = 124586784. Its totient is φ = 13842960.

The previous prime is 51911129. The next prime is 51911213. The reversal of 51911130 is 3111915.

It is a junction number, because it is equal to n+sod(n) for n = 51911097 and 51911106.

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, 865156 + ... + 865215.

It is an arithmetic number, because the mean of its divisors is an integer number (7786674).

Almost surely, 2^51911130 is an apocalyptic number.

51911130 is an abundant number, since it is smaller than the sum of its proper divisors (72675654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51911130 is a wasteful number, since it uses less digits than its factorization.

51911130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730381.

The product of its (nonzero) digits is 135, while the sum is 21.

The square root of 51911130 is about 7204.9378900862. The cubic root of 51911130 is about 373.0383609295.

The spelling of 51911130 in words is "fifty-one million, nine hundred eleven thousand, one hundred thirty".