501011345 has 4 divisors (see below), whose sum is σ = 601213620. Its totient is φ = 400809072.

The previous prime is 501011341. The next prime is 501011347. The reversal of 501011345 is 543110105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543110105 = 5 ⋅108622021.

It can be written as a sum of positive squares in 2 ways, for example, as 359329936 + 141681409 = 18956^2 + 11903^2 .

It is a cyclic number.

It is not a de Polignac number, because 501011345 - 2² = 501011341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (501011341) 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 3 ways as a sum of consecutive naturals, for example, 50101130 + ... + 50101139.

It is an arithmetic number, because the mean of its divisors is an integer number (150303405).

Almost surely, 2^501011345 is an apocalyptic number.

It is an amenable number.

501011345 is a deficient number, since it is larger than the sum of its proper divisors (100202275).

501011345 is a wasteful number, since it uses less digits than its factorization.

501011345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100202274.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 501011345 is about 22383.2827127747. The cubic root of 501011345 is about 794.2353022894.

The spelling of 501011345 in words is "five hundred one million, eleven thousand, three hundred forty-five".