51987003 has 8 divisors (see below), whose sum is σ = 73393488. Its totient is φ = 32619264.

The previous prime is 51986999. The next prime is 51987077. The reversal of 51987003 is 30078915.

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

It is not a de Polignac number, because 51987003 - 2² = 51986999 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51987503) 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, 509626 + ... + 509727.

It is an arithmetic number, because the mean of its divisors is an integer number (9174186).

Almost surely, 2^51987003 is an apocalyptic number.

51987003 is a deficient number, since it is larger than the sum of its proper divisors (21406485).

51987003 is a wasteful number, since it uses less digits than its factorization.

51987003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019373.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 51987003 is about 7210.2013148039. The cubic root of 51987003 is about 373.2200160088.

The spelling of 51987003 in words is "fifty-one million, nine hundred eighty-seven thousand, three".