51298887 has 8 divisors (see below), whose sum is σ = 69264640. Its totient is φ = 33766200.

The previous prime is 51298873. The next prime is 51298921. The reversal of 51298887 is 78889215.

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

It is not a de Polignac number, because 51298887 - 2⁶ = 51298823 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 (51298837) 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, 107989 + ... + 108462.

It is an arithmetic number, because the mean of its divisors is an integer number (8658080).

Almost surely, 2^51298887 is an apocalyptic number.

51298887 is a deficient number, since it is larger than the sum of its proper divisors (17965753).

51298887 is a wasteful number, since it uses less digits than its factorization.

51298887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216533.

The product of its digits is 322560, while the sum is 48.

The square root of 51298887 is about 7162.3241339666. The cubic root of 51298887 is about 371.5660116964.

It can be divided in two parts, 512 and 98887, that added together give a palindrome (99399).

The spelling of 51298887 in words is "fifty-one million, two hundred ninety-eight thousand, eight hundred eighty-seven".