561955454 has 8 divisors (see below), whose sum is σ = 843528168. Its totient is φ = 280779400.

The previous prime is 561955439. The next prime is 561955477. The reversal of 561955454 is 454559165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×561955454² = 631587864560692232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 95597 + ... + 101304.

It is an arithmetic number, because the mean of its divisors is an integer number (105441021).

Almost surely, 2^561955454 is an apocalyptic number.

561955454 is a deficient number, since it is larger than the sum of its proper divisors (281572714).

561955454 is a wasteful number, since it uses less digits than its factorization.

561955454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198330.

The product of its digits is 540000, while the sum is 44.

The square root of 561955454 is about 23705.5996338418. The cubic root of 561955454 is about 825.2153482521.

The spelling of 561955454 in words is "five hundred sixty-one million, nine hundred fifty-five thousand, four hundred fifty-four".