51000545 has 16 divisors (see below), whose sum is σ = 64108800. Its totient is φ = 38875584.

The previous prime is 51000539. The next prime is 51000557. The reversal of 51000545 is 54500015.

It is a cyclic number.

It is not a de Polignac number, because 51000545 - 2²² = 46806241 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 35756 + ... + 37154.

It is an arithmetic number, because the mean of its divisors is an integer number (4006800).

Almost surely, 2^51000545 is an apocalyptic number.

It is an amenable number.

51000545 is a deficient number, since it is larger than the sum of its proper divisors (13108255).

51000545 is a wasteful number, since it uses less digits than its factorization.

51000545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 51000545 is about 7141.4665860732. The cubic root of 51000545 is about 370.8442978985.

The spelling of 51000545 in words is "fifty-one million, five hundred forty-five", and thus it is an aban number.