51825145 has 8 divisors (see below), whose sum is σ = 62889480. Its totient is φ = 40993920.

The previous prime is 51825131. The next prime is 51825181. The reversal of 51825145 is 54152815.

It can be written as a sum of positive squares in 4 ways, for example, as 674041 + 51151104 = 821^2 + 7152^2 .

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

It is not a de Polignac number, because 51825145 - 2¹⁹ = 51300857 is a prime.

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, 57786 + ... + 58675.

It is an arithmetic number, because the mean of its divisors is an integer number (7861185).

Almost surely, 2^51825145 is an apocalyptic number.

It is an amenable number.

51825145 is a deficient number, since it is larger than the sum of its proper divisors (11064335).

51825145 is a wasteful number, since it uses less digits than its factorization.

51825145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116555.

The product of its digits is 8000, while the sum is 31.

The square root of 51825145 is about 7198.9683288649. The cubic root of 51825145 is about 372.8322816184.

The spelling of 51825145 in words is "fifty-one million, eight hundred twenty-five thousand, one hundred forty-five".