561001053 has 4 divisors (see below), whose sum is σ = 748001408. Its totient is φ = 374000700.

The previous prime is 561001039. The next prime is 561001057. The reversal of 561001053 is 350100165.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 561001053 - 2²¹ = 558903901 is a prime.

It is a Duffinian number.

561001053 is a modest number, since divided by 1053 gives 561 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561001057) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 93500173 + ... + 93500178.

It is an arithmetic number, because the mean of its divisors is an integer number (187000352).

Almost surely, 2^561001053 is an apocalyptic number.

It is an amenable number.

561001053 is a deficient number, since it is larger than the sum of its proper divisors (187000355).

561001053 is a wasteful number, since it uses less digits than its factorization.

561001053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187000354.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 561001053 is about 23685.4607934910. The cubic root of 561001053 is about 824.7479134304.

The spelling of 561001053 in words is "five hundred sixty-one million, one thousand, fifty-three".