51770825 has 6 divisors (see below), whose sum is σ = 64195854. Its totient is φ = 41416640.

The previous prime is 51770821. The next prime is 51770827. The reversal of 51770825 is 52807715.

It can be written as a sum of positive squares in 3 ways, for example, as 891136 + 50879689 = 944^2 + 7133^2 .

It is not a de Polignac number, because 51770825 - 2² = 51770821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51770821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1035392 + ... + 1035441.

It is an arithmetic number, because the mean of its divisors is an integer number (10699309).

Almost surely, 2^51770825 is an apocalyptic number.

It is an amenable number.

51770825 is a deficient number, since it is larger than the sum of its proper divisors (12425029).

51770825 is a wasteful number, since it uses less digits than its factorization.

51770825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070843 (or 2070838 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 51770825 is about 7195.1945769381. The cubic root of 51770825 is about 372.7019759570.

The spelling of 51770825 in words is "fifty-one million, seven hundred seventy thousand, eight hundred twenty-five".