51144210 has 96 divisors (see below), whose sum is σ = 148599360. Its totient is φ = 12581568.

The previous prime is 51144187. The next prime is 51144263. The reversal of 51144210 is 1244115.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

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, 30781 + ... + 32399.

It is an arithmetic number, because the mean of its divisors is an integer number (1547910).

Almost surely, 2^51144210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51144210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74299680).

51144210 is an abundant number, since it is smaller than the sum of its proper divisors (97455150).

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

51144210 is a wasteful number, since it uses less digits than its factorization.

51144210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654 (or 1642 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 51144210 is about 7151.5180206723. The cubic root of 51144210 is about 371.1921856711.

Adding to 51144210 its reverse (1244115), we get a palindrome (52388325).

The spelling of 51144210 in words is "fifty-one million, one hundred forty-four thousand, two hundred ten".