501511061 has 16 divisors (see below), whose sum is σ = 543533760. Its totient is φ = 461116800.

The previous prime is 501511019. The next prime is 501511091. The reversal of 501511061 is 160115105.

It is a cyclic number.

It is not a de Polignac number, because 501511061 - 2¹⁴ = 501494677 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501511001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421910 + ... + 423096.

It is an arithmetic number, because the mean of its divisors is an integer number (33970860).

Almost surely, 2^501511061 is an apocalyptic number.

It is an amenable number.

501511061 is a deficient number, since it is larger than the sum of its proper divisors (42022699).

501511061 is a wasteful number, since it uses less digits than its factorization.

501511061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 501511061 is about 22394.4426365114. The cubic root of 501511061 is about 794.4992751582.

Adding to 501511061 its reverse (160115105), we get a palindrome (661626166).

The spelling of 501511061 in words is "five hundred one million, five hundred eleven thousand, sixty-one".