51480587 has 8 divisors (see below), whose sum is σ = 52285440. Its totient is φ = 50679720.

The previous prime is 51480577. The next prime is 51480599. The reversal of 51480587 is 78508415.

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 51480587 - 2⁴ = 51480571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51480587.

It is not an unprimeable number, because it can be changed into a prime (51480577) 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, 34262 + ... + 35732.

It is an arithmetic number, because the mean of its divisors is an integer number (6535680).

Almost surely, 2^51480587 is an apocalyptic number.

51480587 is a deficient number, since it is larger than the sum of its proper divisors (804853).

51480587 is a wasteful number, since it uses less digits than its factorization.

51480587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 51480587 is about 7174.9973519159. The cubic root of 51480587 is about 372.0041887801.

Adding to 51480587 its sum of digits (38), we get a square (51480625 = 7175²).

The spelling of 51480587 in words is "fifty-one million, four hundred eighty thousand, five hundred eighty-seven".