511520941 has 4 divisors (see below), whose sum is σ = 514117692. Its totient is φ = 508924192.

The previous prime is 511520927. The next prime is 511520951. The reversal of 511520941 is 149025115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 149025115 = 5 ⋅29805023.

It can be written as a sum of positive squares in 2 ways, for example, as 382789225 + 128731716 = 19565^2 + 11346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511520941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511520951) 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, 1298080 + ... + 1298473.

It is an arithmetic number, because the mean of its divisors is an integer number (128529423).

Almost surely, 2^511520941 is an apocalyptic number.

It is an amenable number.

511520941 is a deficient number, since it is larger than the sum of its proper divisors (2596751).

511520941 is a wasteful number, since it uses less digits than its factorization.

511520941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596750.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 511520941 is about 22616.8287122664. The cubic root of 511520941 is about 799.7504122447.

The spelling of 511520941 in words is "five hundred eleven million, five hundred twenty thousand, nine hundred forty-one".