51006045 has 32 divisors (see below), whose sum is σ = 84602880. Its totient is φ = 26223680.

The previous prime is 51006023. The next prime is 51006047. The reversal of 51006045 is 54060015.

It is a happy number.

It is not a de Polignac number, because 51006045 - 2⁷ = 51005917 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 (51006047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49546 + ... + 50564.

It is an arithmetic number, because the mean of its divisors is an integer number (2643840).

Almost surely, 2^51006045 is an apocalyptic number.

It is an amenable number.

51006045 is a deficient number, since it is larger than the sum of its proper divisors (33596835).

51006045 is a wasteful number, since it uses less digits than its factorization.

51006045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51006045 is about 7141.8516506576. The cubic root of 51006045 is about 370.8576282811.

The spelling of 51006045 in words is "fifty-one million, six thousand, forty-five".