51022842 has 32 divisors (see below), whose sum is σ = 110581632. Its totient is φ = 15601344.

The previous prime is 51022841. The next prime is 51022849. The reversal of 51022842 is 24822015.

It is not an unprimeable number, because it can be changed into a prime (51022841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11068 + ... + 14984.

It is an arithmetic number, because the mean of its divisors is an integer number (3455676).

Almost surely, 2^51022842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51022842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55290816).

51022842 is an abundant number, since it is smaller than the sum of its proper divisors (59558790).

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

51022842 is a wasteful number, since it uses less digits than its factorization.

51022842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 51022842 is about 7143.0275093968. The cubic root of 51022842 is about 370.8983333381.

Adding to 51022842 its reverse (24822015), we get a palindrome (75844857).

The spelling of 51022842 in words is "fifty-one million, twenty-two thousand, eight hundred forty-two".