51447468 has 12 divisors (see below), whose sum is σ = 120044120. Its totient is φ = 17149152.

The previous prime is 51447449. The next prime is 51447493. The reversal of 51447468 is 86474415.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×51447468² = 5293683927222048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2143633 + ... + 2143656.

Almost surely, 2^51447468 is an apocalyptic number.

It is an amenable number.

51447468 is an abundant number, since it is smaller than the sum of its proper divisors (68596652).

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

51447468 is a wasteful number, since it uses less digits than its factorization.

51447468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4287296 (or 4287294 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 51447468 is about 7172.6890355013. The cubic root of 51447468 is about 371.9243978633.

It can be divided in two parts, 51447 and 468, that added together give a palindrome (51915).

The spelling of 51447468 in words is "fifty-one million, four hundred forty-seven thousand, four hundred sixty-eight".