51016545 has 24 divisors (see below), whose sum is σ = 91283712. Its totient is φ = 26330400.

The previous prime is 51016543. The next prime is 51016571. The reversal of 51016545 is 54561015.

It is a happy number.

51016545 is a `hidden beast` number, since 5 + 1 + 0 + 1 + 654 + 5 = 666.

It is not a de Polignac number, because 51016545 - 2¹ = 51016543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51016543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16891 + ... + 19680.

It is an arithmetic number, because the mean of its divisors is an integer number (3803488).

Almost surely, 2^51016545 is an apocalyptic number.

It is an amenable number.

51016545 is a deficient number, since it is larger than the sum of its proper divisors (40267167).

51016545 is a wasteful number, since it uses less digits than its factorization.

51016545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36613 (or 36610 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 51016545 is about 7142.5867163094. The cubic root of 51016545 is about 370.8830745324.

The spelling of 51016545 in words is "fifty-one million, sixteen thousand, five hundred forty-five".