51286350 has 48 divisors (see below), whose sum is σ = 127960560. Its totient is φ = 13593600.

The previous prime is 51286327. The next prime is 51286357. The reversal of 51286350 is 5368215.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51286357) 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, 26206 + ... + 28094.

It is an arithmetic number, because the mean of its divisors is an integer number (2665845).

Almost surely, 2^51286350 is an apocalyptic number.

51286350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51286350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63980280).

51286350 is an abundant number, since it is smaller than the sum of its proper divisors (76674210).

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

51286350 is a wasteful number, since it uses less digits than its factorization.

51286350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085 (or 2080 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 51286350 is about 7161.4488757513. The cubic root of 51286350 is about 371.5357400674.

The spelling of 51286350 in words is "fifty-one million, two hundred eighty-six thousand, three hundred fifty".