514540643 has 4 divisors (see below), whose sum is σ = 514803408. Its totient is φ = 514277880.

The previous prime is 514540639. The next prime is 514540681. The reversal of 514540643 is 346045415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346045415 = 5 ⋅69209083.

It is a cyclic number.

It is not a de Polignac number, because 514540643 - 2² = 514540639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (514440643) 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, 128423 + ... + 132368.

It is an arithmetic number, because the mean of its divisors is an integer number (128700852).

Almost surely, 2^514540643 is an apocalyptic number.

514540643 is a deficient number, since it is larger than the sum of its proper divisors (262765).

514540643 is a wasteful number, since it uses less digits than its factorization.

514540643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262764.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 514540643 is about 22683.4883340283. The cubic root of 514540643 is about 801.3210688331.

The spelling of 514540643 in words is "five hundred fourteen million, five hundred forty thousand, six hundred forty-three".