551000610549 has 6 divisors (see below), whose sum is σ = 795889770806. Its totient is φ = 367333740360.

The previous prime is 551000610547. The next prime is 551000610551. The reversal of 551000610549 is 945016000155.

551000610549 is a `hidden beast` number, since 5 + 5 + 100 + 0 + 6 + 1 + 0 + 549 = 666.

It is an interprime number because it is at equal distance from previous prime (551000610547) and next prime (551000610551).

It can be written as a sum of positive squares in only one way, i.e., 540269100900 + 10731509649 = 735030^2 + 103593^2 .

It is not a de Polignac number, because 551000610549 - 2¹ = 551000610547 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551000610547) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30611145022 + ... + 30611145039.

Almost surely, 2^551000610549 is an apocalyptic number.

It is an amenable number.

551000610549 is a deficient number, since it is larger than the sum of its proper divisors (244889160257).

551000610549 is a wasteful number, since it uses less digits than its factorization.

551000610549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61222290067 (or 61222290064 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 551000610549 in words is "five hundred fifty-one billion, six hundred ten thousand, five hundred forty-nine".