561552011 has 8 divisors (see below), whose sum is σ = 610176000. Its totient is φ = 514834920.

The previous prime is 561552001. The next prime is 561552037. The reversal of 561552011 is 110255165.

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

It is a cyclic number.

It is not a de Polignac number, because 561552011 - 2²² = 557357707 is a prime.

It is a super-2 number, since 2×561552011² = 630681322116288242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561552001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476111 + ... + 477288.

It is an arithmetic number, because the mean of its divisors is an integer number (76272000).

Almost surely, 2^561552011 is an apocalyptic number.

561552011 is a deficient number, since it is larger than the sum of its proper divisors (48623989).

561552011 is a wasteful number, since it uses less digits than its factorization.

561552011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953449.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 561552011 is about 23697.0886608461. The cubic root of 561552011 is about 825.0178195110.

The spelling of 561552011 in words is "five hundred sixty-one million, five hundred fifty-two thousand, eleven".