51032226 has 64 divisors (see below), whose sum is σ = 120556800. Its totient is φ = 14394240.

The previous prime is 51032221. The next prime is 51032237. The reversal of 51032226 is 62223015.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51032221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281856 + ... + 282036.

It is an arithmetic number, because the mean of its divisors is an integer number (1883700).

Almost surely, 2^51032226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51032226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60278400).

51032226 is an abundant number, since it is smaller than the sum of its proper divisors (69524574).

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

51032226 is a wasteful number, since it uses less digits than its factorization.

51032226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 51032226 is about 7143.6843435303. The cubic root of 51032226 is about 370.9210701913.

The spelling of 51032226 in words is "fifty-one million, thirty-two thousand, two hundred twenty-six".