561921514 has 48 divisors (see below), whose sum is σ = 1073212416. Its totient is φ = 218198400.

The previous prime is 561921467. The next prime is 561921517. The reversal of 561921514 is 415129165.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 561921514.

It is not an unprimeable number, because it can be changed into a prime (561921517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 412194 + ... + 413554.

It is an arithmetic number, because the mean of its divisors is an integer number (22358592).

Almost surely, 2^561921514 is an apocalyptic number.

561921514 is a deficient number, since it is larger than the sum of its proper divisors (511290902).

561921514 is a wasteful number, since it uses less digits than its factorization.

561921514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771 (or 1764 counting only the distinct ones).

The product of its digits is 10800, while the sum is 34.

The square root of 561921514 is about 23704.8837584157. The cubic root of 561921514 is about 825.1987346145.

The spelling of 561921514 in words is "five hundred sixty-one million, nine hundred twenty-one thousand, five hundred fourteen".