501428061 has 24 divisors (see below), whose sum is σ = 733200000. Its totient is φ = 330197472.

The previous prime is 501428051. The next prime is 501428077. The reversal of 501428061 is 160824105.

It is a de Polignac number, because none of the positive numbers 2^k-501428061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501428041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265920 + ... + 267798.

It is an arithmetic number, because the mean of its divisors is an integer number (30550000).

Almost surely, 2^501428061 is an apocalyptic number.

It is an amenable number.

501428061 is a deficient number, since it is larger than the sum of its proper divisors (231771939).

501428061 is a wasteful number, since it uses less digits than its factorization.

501428061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233 (or 2230 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 501428061 is about 22392.5894215028. The cubic root of 501428061 is about 794.4554429059.

The spelling of 501428061 in words is "five hundred one million, four hundred twenty-eight thousand, sixty-one".