554551645261 has 4 divisors (see below), whose sum is σ = 554718130624. Its totient is φ = 554385159900.

The previous prime is 554551645247. The next prime is 554551645301. The reversal of 554551645261 is 162546155455.

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 554551645261 - 2⁷ = 554551645133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554551645061) 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, 83237685 + ... + 83244346.

It is an arithmetic number, because the mean of its divisors is an integer number (138679532656).

Almost surely, 2^554551645261 is an apocalyptic number.

It is an amenable number.

554551645261 is a deficient number, since it is larger than the sum of its proper divisors (166485363).

554551645261 is a wasteful number, since it uses less digits than its factorization.

554551645261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166485362.

The product of its digits is 3600000, while the sum is 49.

The spelling of 554551645261 in words is "five hundred fifty-four billion, five hundred fifty-one million, six hundred forty-five thousand, two hundred sixty-one".