51371530 has 16 divisors (see below), whose sum is σ = 105678720. Its totient is φ = 17613072.

The previous prime is 51371521. The next prime is 51371533. The reversal of 51371530 is 3517315.

It is a junction number, because it is equal to n+sod(n) for n = 51371495 and 51371504.

It is not an unprimeable number, because it can be changed into a prime (51371533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366870 + ... + 367009.

It is an arithmetic number, because the mean of its divisors is an integer number (6604920).

Almost surely, 2^51371530 is an apocalyptic number.

51371530 is an abundant number, since it is smaller than the sum of its proper divisors (54307190).

51371530 is a wasteful number, since it uses less digits than its factorization.

51371530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733893.

The product of its (nonzero) digits is 1575, while the sum is 25.

The square root of 51371530 is about 7167.3935290313. The cubic root of 51371530 is about 371.7413172481.

Adding to 51371530 its reverse (3517315), we get a palindrome (54888845).

The spelling of 51371530 in words is "fifty-one million, three hundred seventy-one thousand, five hundred thirty".