513997442 has 16 divisors (see below), whose sum is σ = 881641152. Its totient is φ = 220158960.

The previous prime is 513997441. The next prime is 513997483. The reversal of 513997442 is 244799315.

It is a junction number, because it is equal to n+sod(n) for n = 513997393 and 513997402.

It is not an unprimeable number, because it can be changed into a prime (513997441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17528 + ... + 36540.

It is an arithmetic number, because the mean of its divisors is an integer number (55102572).

Almost surely, 2^513997442 is an apocalyptic number.

513997442 is a deficient number, since it is larger than the sum of its proper divisors (367643710).

513997442 is a wasteful number, since it uses less digits than its factorization.

513997442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20953.

The product of its digits is 272160, while the sum is 44.

The square root of 513997442 is about 22671.5116831675. The cubic root of 513997442 is about 801.0389844300.

The spelling of 513997442 in words is "five hundred thirteen million, nine hundred ninety-seven thousand, four hundred forty-two".