51045487 has 8 divisors (see below), whose sum is σ = 53491680. Its totient is φ = 48618240.

The previous prime is 51045383. The next prime is 51045497. The reversal of 51045487 is 78454015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51045487 - 2²³ = 42656879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51045497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939 + ... + 10147.

It is an arithmetic number, because the mean of its divisors is an integer number (6686460).

Almost surely, 2^51045487 is an apocalyptic number.

51045487 is a deficient number, since it is larger than the sum of its proper divisors (2446193).

51045487 is a wasteful number, since it uses less digits than its factorization.

51045487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9473.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 51045487 is about 7144.6124457524. The cubic root of 51045487 is about 370.9531960243.

The spelling of 51045487 in words is "fifty-one million, forty-five thousand, four hundred eighty-seven".