501244405 has 16 divisors (see below), whose sum is σ = 664568064. Its totient is φ = 360997120.

The previous prime is 501244399. The next prime is 501244409. The reversal of 501244405 is 504442105.

It is a happy number.

It is not a de Polignac number, because 501244405 - 2⁷ = 501244277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 501244405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501244409) 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, 126241 + ... + 130150.

It is an arithmetic number, because the mean of its divisors is an integer number (41535504).

Almost surely, 2^501244405 is an apocalyptic number.

It is an amenable number.

501244405 is a deficient number, since it is larger than the sum of its proper divisors (163323659).

501244405 is a wasteful number, since it uses less digits than its factorization.

501244405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256436.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 501244405 is about 22388.4882249785. The cubic root of 501244405 is about 794.3584370824.

The spelling of 501244405 in words is "five hundred one million, two hundred forty-four thousand, four hundred five".