51105489 has 8 divisors (see below), whose sum is σ = 68180832. Its totient is φ = 34050240.

The previous prime is 51105487. The next prime is 51105529. The reversal of 51105489 is 98450115.

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

It is not a de Polignac number, because 51105489 - 2¹ = 51105487 is a prime.

It is a super-2 number, since 2×51105489² = 5223542011858242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51105487) 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, 2542 + ... + 10424.

It is an arithmetic number, because the mean of its divisors is an integer number (8522604).

Almost surely, 2^51105489 is an apocalyptic number.

It is an amenable number.

51105489 is a deficient number, since it is larger than the sum of its proper divisors (17075343).

51105489 is a wasteful number, since it uses less digits than its factorization.

51105489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10047.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 51105489 is about 7148.8103206058. The cubic root of 51105489 is about 371.0984861668.

The spelling of 51105489 in words is "fifty-one million, one hundred five thousand, four hundred eighty-nine".