51549512 has 32 divisors (see below), whose sum is σ = 111715200. Its totient is φ = 21842304.

The previous prime is 51549499. The next prime is 51549517. The reversal of 51549512 is 21594515.

It is not an unprimeable number, because it can be changed into a prime (51549517) 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, 188 + ... + 10155.

It is an arithmetic number, because the mean of its divisors is an integer number (3491100).

Almost surely, 2^51549512 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 51549512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55857600).

51549512 is an abundant number, since it is smaller than the sum of its proper divisors (60165688).

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

51549512 is a wasteful number, since it uses less digits than its factorization.

51549512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10445 (or 10441 counting only the distinct ones).

The product of its digits is 9000, while the sum is 32.

The square root of 51549512 is about 7179.7988829772. The cubic root of 51549512 is about 372.1701345329.

The spelling of 51549512 in words is "fifty-one million, five hundred forty-nine thousand, five hundred twelve".