51057045 has 24 divisors (see below), whose sum is σ = 95307576. Its totient is φ = 25135488.

The previous prime is 51057037. The next prime is 51057049. The reversal of 51057045 is 54075015.

51057045 is a `hidden beast` number, since 51 + 0 + 570 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8520561 + 42536484 = 2919^2 + 6522^2 .

It is not a de Polignac number, because 51057045 - 2³ = 51057037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51057049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43054 + ... + 44223.

It is an arithmetic number, because the mean of its divisors is an integer number (3971149).

Almost surely, 2^51057045 is an apocalyptic number.

It is an amenable number.

51057045 is a deficient number, since it is larger than the sum of its proper divisors (44250531).

51057045 is a wasteful number, since it uses less digits than its factorization.

51057045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87301 (or 87298 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 51057045 is about 7145.4212611994. The cubic root of 51057045 is about 370.9811916660.

The spelling of 51057045 in words is "fifty-one million, fifty-seven thousand, forty-five".