51507146 has 8 divisors (see below), whose sum is σ = 77297220. Its totient is φ = 25741408.

The previous prime is 51507133. The next prime is 51507173. The reversal of 51507146 is 64170515.

It can be written as a sum of positive squares in 2 ways, for example, as 46036225 + 5470921 = 6785^2 + 2339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 740 + ... + 10176.

Almost surely, 2^51507146 is an apocalyptic number.

51507146 is a deficient number, since it is larger than the sum of its proper divisors (25790074).

51507146 is a wasteful number, since it uses less digits than its factorization.

51507146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12168.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 51507146 is about 7176.8479153456. The cubic root of 51507146 is about 372.0681505001.

The spelling of 51507146 in words is "fifty-one million, five hundred seven thousand, one hundred forty-six".