51467489 has 4 divisors (see below), whose sum is σ = 53242260. Its totient is φ = 49692720.

The previous prime is 51467467. The next prime is 51467513. The reversal of 51467489 is 98476415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98476415 = 5 ⋅19695283.

It can be written as a sum of positive squares in 2 ways, for example, as 12816400 + 38651089 = 3580^2 + 6217^2 .

It is a cyclic number.

It is not a de Polignac number, because 51467489 - 2¹² = 51463393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51467419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 887342 + ... + 887399.

It is an arithmetic number, because the mean of its divisors is an integer number (13310565).

Almost surely, 2^51467489 is an apocalyptic number.

It is an amenable number.

51467489 is a deficient number, since it is larger than the sum of its proper divisors (1774771).

51467489 is a wasteful number, since it uses less digits than its factorization.

51467489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774770.

The product of its digits is 241920, while the sum is 44.

The square root of 51467489 is about 7174.0845409014. The cubic root of 51467489 is about 371.9726369244.

The spelling of 51467489 in words is "fifty-one million, four hundred sixty-seven thousand, four hundred eighty-nine".