51063785 has 8 divisors (see below), whose sum is σ = 61320456. Its totient is φ = 40821760.

The previous prime is 51063763. The next prime is 51063787. The reversal of 51063785 is 58736015.

It can be written as a sum of positive squares in 4 ways, for example, as 11888704 + 39175081 = 3448^2 + 6259^2 .

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

It is not a de Polignac number, because 51063785 - 2¹² = 51059689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51063787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6665 + ... + 12105.

It is an arithmetic number, because the mean of its divisors is an integer number (7665057).

Almost surely, 2^51063785 is an apocalyptic number.

It is an amenable number.

51063785 is a deficient number, since it is larger than the sum of its proper divisors (10256671).

51063785 is a wasteful number, since it uses less digits than its factorization.

51063785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7323.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 51063785 is about 7145.8928763311. The cubic root of 51063785 is about 370.9975152586.

The spelling of 51063785 in words is "fifty-one million, sixty-three thousand, seven hundred eighty-five".