51504087 has 16 divisors (see below), whose sum is σ = 71568000. Its totient is φ = 32905824.

The previous prime is 51504083. The next prime is 51504121. The reversal of 51504087 is 78040515.

It is not a de Polignac number, because 51504087 - 2² = 51504083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51504083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9964 + ... + 14222.

It is an arithmetic number, because the mean of its divisors is an integer number (4473000).

Almost surely, 2^51504087 is an apocalyptic number.

51504087 is a deficient number, since it is larger than the sum of its proper divisors (20063913).

51504087 is a wasteful number, since it uses less digits than its factorization.

51504087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 51504087 is about 7176.6347963373. The cubic root of 51504087 is about 372.0607846678.

The spelling of 51504087 in words is "fifty-one million, five hundred four thousand, eighty-seven".