51164500 has 24 divisors (see below), whose sum is σ = 111744360. Its totient is φ = 20465600.

The previous prime is 51164471. The next prime is 51164521. The reversal of 51164500 is 546115.

It can be written as a sum of positive squares in 4 ways, for example, as 5817744 + 45346756 = 2412^2 + 6734^2 .

It is a congruent number.

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, 50665 + ... + 51664.

It is an arithmetic number, because the mean of its divisors is an integer number (4656015).

Almost surely, 2^51164500 is an apocalyptic number.

51164500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51164500 is an abundant number, since it is smaller than the sum of its proper divisors (60579860).

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

51164500 is a wasteful number, since it uses less digits than its factorization.

51164500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102348 (or 102336 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 51164500 is about 7152.9364599443. The cubic root of 51164500 is about 371.2412658029.

The spelling of 51164500 in words is "fifty-one million, one hundred sixty-four thousand, five hundred".