51741864 has 96 divisors (see below), whose sum is σ = 149292000. Its totient is φ = 16142976.

The previous prime is 51741839. The next prime is 51741871. The reversal of 51741864 is 46814715.

It is a happy number.

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

Its product of digits (26880) is a multiple of the sum of its prime divisors (480).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148939 + ... + 149285.

It is an arithmetic number, because the mean of its divisors is an integer number (1555125).

Almost surely, 2^51741864 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 51741864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74646000).

51741864 is an abundant number, since it is smaller than the sum of its proper divisors (97550136).

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

51741864 is a wasteful number, since it uses less digits than its factorization.

51741864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 480 counting only the distinct ones).

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

The square root of 51741864 is about 7193.1817716502. The cubic root of 51741864 is about 372.6324655376.

The spelling of 51741864 in words is "fifty-one million, seven hundred forty-one thousand, eight hundred sixty-four".