51266544 has 120 divisors (see below), whose sum is σ = 156739968. Its totient is φ = 14394240.

The previous prime is 51266533. The next prime is 51266549. The reversal of 51266544 is 44566215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51266549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166839 + ... + 167145.

Almost surely, 2^51266544 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 51266544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78369984).

51266544 is an abundant number, since it is smaller than the sum of its proper divisors (105473424).

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

51266544 is a wasteful number, since it uses less digits than its factorization.

51266544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 390 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 51266544 is about 7160.0659214842. The cubic root of 51266544 is about 371.4879067788.

The spelling of 51266544 in words is "fifty-one million, two hundred sixty-six thousand, five hundred forty-four".