561457285 has 8 divisors (see below), whose sum is σ = 676943136. Its totient is φ = 447036240.

The previous prime is 561457271. The next prime is 561457331. The reversal of 561457285 is 582754165.

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

It is not a de Polignac number, because 561457285 - 2¹⁵ = 561424517 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265039 + ... + 267148.

It is an arithmetic number, because the mean of its divisors is an integer number (84617892).

Almost surely, 2^561457285 is an apocalyptic number.

It is an amenable number.

561457285 is a deficient number, since it is larger than the sum of its proper divisors (115485851).

561457285 is a wasteful number, since it uses less digits than its factorization.

561457285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532403.

The product of its digits is 336000, while the sum is 43.

The square root of 561457285 is about 23695.0898922118. The cubic root of 561457285 is about 824.9714272320.

The spelling of 561457285 in words is "five hundred sixty-one million, four hundred fifty-seven thousand, two hundred eighty-five".