554201561 has 4 divisors (see below), whose sum is σ = 554736000. Its totient is φ = 553667124.

The previous prime is 554201533. The next prime is 554201591. The reversal of 554201561 is 165102455.

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 a cyclic number.

It is not a de Polignac number, because 554201561 - 2⁶ = 554201497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (554201591) 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, 265661 + ... + 267738.

It is an arithmetic number, because the mean of its divisors is an integer number (138684000).

Almost surely, 2^554201561 is an apocalyptic number.

It is an amenable number.

554201561 is a deficient number, since it is larger than the sum of its proper divisors (534439).

554201561 is a wasteful number, since it uses less digits than its factorization.

554201561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534438.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 554201561 is about 23541.4859556486. The cubic root of 554201561 is about 821.4023006062.

The spelling of 554201561 in words is "five hundred fifty-four million, two hundred one thousand, five hundred sixty-one".