501071513 has 4 divisors (see below), whose sum is σ = 506701620. Its totient is φ = 495441408.

The previous prime is 501071449. The next prime is 501071521. The reversal of 501071513 is 315170105.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 313573264 + 187498249 = 17708^2 + 13693^2 .

It is a cyclic number.

It is not a de Polignac number, because 501071513 - 2⁶ = 501071449 is a prime.

It is a super-2 number, since 2×501071513² = 502145322280218338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501071533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2814920 + ... + 2815097.

It is an arithmetic number, because the mean of its divisors is an integer number (126675405).

Almost surely, 2^501071513 is an apocalyptic number.

It is an amenable number.

501071513 is a deficient number, since it is larger than the sum of its proper divisors (5630107).

501071513 is an equidigital number, since it uses as much as digits as its factorization.

501071513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5630106.

The product of its (nonzero) digits is 525, while the sum is 23.

The square root of 501071513 is about 22384.6267112052. The cubic root of 501071513 is about 794.2670950737.

The spelling of 501071513 in words is "five hundred one million, seventy-one thousand, five hundred thirteen".