51511130 has 32 divisors (see below), whose sum is σ = 102876480. Its totient is φ = 18411520.

The previous prime is 51511127. The next prime is 51511133. The reversal of 51511130 is 3111515.

It is an interprime number because it is at equal distance from previous prime (51511127) and next prime (51511133).

It is a junction number, because it is equal to n+sod(n) for n = 51511099 and 51511108.

It is not an unprimeable number, because it can be changed into a prime (51511133) 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, 2522 + ... + 10458.

It is an arithmetic number, because the mean of its divisors is an integer number (3214890).

Almost surely, 2^51511130 is an apocalyptic number.

51511130 is a deficient number, since it is larger than the sum of its proper divisors (51365350).

51511130 is a wasteful number, since it uses less digits than its factorization.

51511130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8014.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 51511130 is about 7177.1254691555. The cubic root of 51511130 is about 372.0777432228.

Adding to 51511130 its reverse (3111515), we get a palindrome (54622645).

The spelling of 51511130 in words is "fifty-one million, five hundred eleven thousand, one hundred thirty".