513779140 has 24 divisors (see below), whose sum is σ = 1233070272. Its totient is φ = 176152800.

The previous prime is 513779099. The next prime is 513779143. The reversal of 513779140 is 41977315.

It is a self number, because there is not a number n which added to its sum of digits gives 513779140.

It is not an unprimeable number, because it can be changed into a prime (513779143) 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 7 ways as a sum of consecutive naturals, for example, 1834786 + ... + 1835065.

It is an arithmetic number, because the mean of its divisors is an integer number (51377928).

Almost surely, 2^513779140 is an apocalyptic number.

It is an amenable number.

513779140 is an abundant number, since it is smaller than the sum of its proper divisors (719291132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513779140 is a wasteful number, since it uses less digits than its factorization.

513779140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3669867 (or 3669865 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 513779140 is about 22666.6967156664. The cubic root of 513779140 is about 800.9255641674.

The spelling of 513779140 in words is "five hundred thirteen million, seven hundred seventy-nine thousand, one hundred forty".