51500887 has 8 divisors (see below), whose sum is σ = 56568960. Its totient is φ = 46668600.

The previous prime is 51500881. The next prime is 51500893. The reversal of 51500887 is 78800515.

It is an interprime number because it is at equal distance from previous prime (51500881) and next prime (51500893).

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 51500887 - 2¹⁹ = 50976599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51500881) 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, 58489 + ... + 59362.

It is an arithmetic number, because the mean of its divisors is an integer number (7071120).

Almost surely, 2^51500887 is an apocalyptic number.

51500887 is a deficient number, since it is larger than the sum of its proper divisors (5068073).

51500887 is a wasteful number, since it uses less digits than its factorization.

51500887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117893.

The product of its (nonzero) digits is 11200, while the sum is 34.

The square root of 51500887 is about 7176.4118471559. The cubic root of 51500887 is about 372.0530790064.

The spelling of 51500887 in words is "fifty-one million, five hundred thousand, eight hundred eighty-seven".