51131010 has 64 divisors (see below), whose sum is σ = 143136000. Its totient is φ = 11684736.

The previous prime is 51131009. The next prime is 51131021. The reversal of 51131010 is 1013115.

It is a super-2 number, since 2×51131010² = 5228760367240200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7806 + ... + 12774.

It is an arithmetic number, because the mean of its divisors is an integer number (2236500).

Almost surely, 2^51131010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51131010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71568000).

51131010 is an abundant number, since it is smaller than the sum of its proper divisors (92004990).

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

51131010 is a wasteful number, since it uses less digits than its factorization.

51131010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000 (or 4986 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 12.

The square root of 51131010 is about 7150.5950801314. The cubic root of 51131010 is about 371.1602487980.

Adding to 51131010 its reverse (1013115), we get a palindrome (52144125).

The spelling of 51131010 in words is "fifty-one million, one hundred thirty-one thousand, ten".