51448716 has 144 divisors (see below), whose sum is σ = 152535040. Its totient is φ = 14968800.

The previous prime is 51448687. The next prime is 51448729. The reversal of 51448716 is 61784415.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 405045 + ... + 405171.

Almost surely, 2^51448716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51448716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76267520).

51448716 is an abundant number, since it is smaller than the sum of its proper divisors (101086324).

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

51448716 is a wasteful number, since it uses less digits than its factorization.

51448716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 174 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 51448716 is about 7172.7760316352. The cubic root of 51448716 is about 371.9274051891.

The spelling of 51448716 in words is "fifty-one million, four hundred forty-eight thousand, seven hundred sixteen".