51802545 has 16 divisors (see below), whose sum is σ = 83102400. Its totient is φ = 27555264.

The previous prime is 51802537. The next prime is 51802547. The reversal of 51802545 is 54520815.

51802545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51802545 - 2³ = 51802537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51802547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1606 + ... + 10304.

It is an arithmetic number, because the mean of its divisors is an integer number (5193900).

Almost surely, 2^51802545 is an apocalyptic number.

It is an amenable number.

51802545 is a deficient number, since it is larger than the sum of its proper divisors (31299855).

51802545 is a wasteful number, since it uses less digits than its factorization.

51802545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9104.

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 51802545 is about 7197.3984883429. The cubic root of 51802545 is about 372.7780786205.

The spelling of 51802545 in words is "fifty-one million, eight hundred two thousand, five hundred forty-five".