561401005 has 16 divisors (see below), whose sum is σ = 736257600. Its totient is φ = 407551360.

The previous prime is 561400993. The next prime is 561401011. The reversal of 561401005 is 500104165.

561401005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561401005 - 2¹⁹ = 560876717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22326 + ... + 40264.

It is an arithmetic number, because the mean of its divisors is an integer number (46016100).

Almost surely, 2^561401005 is an apocalyptic number.

561401005 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

561401005 is a deficient number, since it is larger than the sum of its proper divisors (174856595).

561401005 is a wasteful number, since it uses less digits than its factorization.

561401005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18524.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 561401005 is about 23693.9022746360. The cubic root of 561401005 is about 824.9438614999.

The spelling of 561401005 in words is "five hundred sixty-one million, four hundred one thousand, five".