561354401 has 4 divisors (see below), whose sum is σ = 561401904. Its totient is φ = 561306900.

The previous prime is 561354383. The next prime is 561354407. The reversal of 561354401 is 104453165.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 561354401 - 2⁶ = 561354337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561354407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9386 + ... + 34796.

It is an arithmetic number, because the mean of its divisors is an integer number (140350476).

Almost surely, 2^561354401 is an apocalyptic number.

It is an amenable number.

561354401 is a deficient number, since it is larger than the sum of its proper divisors (47503).

561354401 is a wasteful number, since it uses less digits than its factorization.

561354401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47502.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 561354401 is about 23692.9187944415. The cubic root of 561354401 is about 824.9210336417.

The spelling of 561354401 in words is "five hundred sixty-one million, three hundred fifty-four thousand, four hundred one".