51109284 has 48 divisors (see below), whose sum is σ = 125373248. Its totient is φ = 16184448.

The previous prime is 51109237. The next prime is 51109301. The reversal of 51109284 is 48290115.

It is a happy number.

It is a super-2 number, since 2×51109284² = 5224317821985312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17754 + ... + 20430.

Almost surely, 2^51109284 is an apocalyptic number.

It is an amenable number.

51109284 is an abundant number, since it is smaller than the sum of its proper divisors (74263964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51109284 is a wasteful number, since it uses less digits than its factorization.

51109284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764 (or 2762 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 51109284 is about 7149.0757444582. The cubic root of 51109284 is about 371.1076716374.

Adding to 51109284 its reverse (48290115), we get a palindrome (99399399).

The spelling of 51109284 in words is "fifty-one million, one hundred nine thousand, two hundred eighty-four".