51131210 has 32 divisors (see below), whose sum is σ = 99574272. Its totient is φ = 18792000.

The previous prime is 51131209. The next prime is 51131219. The reversal of 51131210 is 1213115.

It is a super-2 number, since 2×51131210² = 5228801272128200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51131219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31847 + ... + 33413.

It is an arithmetic number, because the mean of its divisors is an integer number (3111696).

Almost surely, 2^51131210 is an apocalyptic number.

51131210 is a deficient number, since it is larger than the sum of its proper divisors (48443062).

51131210 is a wasteful number, since it uses less digits than its factorization.

51131210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 51131210 is about 7150.6090649678. The cubic root of 51131210 is about 371.1607327310.

Adding to 51131210 its reverse (1213115), we get a palindrome (52344325).

The spelling of 51131210 in words is "fifty-one million, one hundred thirty-one thousand, two hundred ten".