5561552477 has 4 divisors (see below), whose sum is σ = 5989364220. Its totient is φ = 5133740736.

The previous prime is 5561552449. The next prime is 5561552501. The reversal of 5561552477 is 7742551655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1025664676 + 4535887801 = 32026^2 + 67349^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561552477 - 2⁶ = 5561552413 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 (5561552077) 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, 213905852 + ... + 213905877.

It is an arithmetic number, because the mean of its divisors is an integer number (1497341055).

Almost surely, 2^5561552477 is an apocalyptic number.

It is an amenable number.

5561552477 is a deficient number, since it is larger than the sum of its proper divisors (427811743).

5561552477 is a wasteful number, since it uses less digits than its factorization.

5561552477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427811742.

The product of its digits is 1470000, while the sum is 47.

The square root of 5561552477 is about 74575.8169717235. The cubic root of 5561552477 is about 1771.7346541392.

The spelling of 5561552477 in words is "five billion, five hundred sixty-one million, five hundred fifty-two thousand, four hundred seventy-seven".