561514550 has 24 divisors (see below), whose sum is σ = 1054767312. Its totient is φ = 222380000.

The previous prime is 561514537. The next prime is 561514567. The reversal of 561514550 is 55415165.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50546 + ... + 60645.

It is an arithmetic number, because the mean of its divisors is an integer number (43948638).

Almost surely, 2^561514550 is an apocalyptic number.

561514550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

561514550 is a deficient number, since it is larger than the sum of its proper divisors (493252762).

561514550 is a wasteful number, since it uses less digits than its factorization.

561514550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111304 (or 111299 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 561514550 is about 23696.2982341124. The cubic root of 561514550 is about 824.9994735228. Note that the first 3 decimals are identical.

The spelling of 561514550 in words is "five hundred sixty-one million, five hundred fourteen thousand, five hundred fifty".