51418960 has 20 divisors (see below), whose sum is σ = 119549268. Its totient is φ = 20567552.

The previous prime is 51418951. The next prime is 51418963. The reversal of 51418960 is 6981415.

It can be written as a sum of positive squares in 2 ways, for example, as 13571856 + 37847104 = 3684^2 + 6152^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51418963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321289 + ... + 321448.

Almost surely, 2^51418960 is an apocalyptic number.

It is an amenable number.

51418960 is an abundant number, since it is smaller than the sum of its proper divisors (68130308).

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

51418960 is a wasteful number, since it uses less digits than its factorization.

51418960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642750 (or 642744 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 51418960 is about 7170.7014998534. The cubic root of 51418960 is about 371.8556884259.

The spelling of 51418960 in words is "fifty-one million, four hundred eighteen thousand, nine hundred sixty".