501222492 has 84 divisors (see below), whose sum is σ = 1392604416. Its totient is φ = 157230720.

The previous prime is 501222487. The next prime is 501222493. The reversal of 501222492 is 294222105.

It is a happy number.

501222492 is a `hidden beast` number, since 50 + 122 + 2 + 492 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501222493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 44517 + ... + 54627.

It is an arithmetic number, because the mean of its divisors is an integer number (16578624).

Almost surely, 2^501222492 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 501222492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696302208).

501222492 is an abundant number, since it is smaller than the sum of its proper divisors (891381924).

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

501222492 is a wasteful number, since it uses less digits than its factorization.

501222492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10150 (or 10133 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 501222492 is about 22387.9988386635. The cubic root of 501222492 is about 794.3468612058.

Adding to 501222492 its reverse (294222105), we get a palindrome (795444597).

The spelling of 501222492 in words is "five hundred one million, two hundred twenty-two thousand, four hundred ninety-two".