5571055621 has 4 divisors (see below), whose sum is σ = 5676169932. Its totient is φ = 5465941312.

The previous prime is 5571055613. The next prime is 5571055649. The reversal of 5571055621 is 1265501755.

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 4940543521 + 630512100 = 70289^2 + 25110^2 .

It is a cyclic number.

It is not a de Polignac number, because 5571055621 - 2³ = 5571055613 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 (5571055661) 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, 52557076 + ... + 52557181.

It is an arithmetic number, because the mean of its divisors is an integer number (1419042483).

Almost surely, 2^5571055621 is an apocalyptic number.

It is an amenable number.

5571055621 is a deficient number, since it is larger than the sum of its proper divisors (105114311).

5571055621 is a wasteful number, since it uses less digits than its factorization.

5571055621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105114310.

The product of its (nonzero) digits is 52500, while the sum is 37.

The square root of 5571055621 is about 74639.5044262755. The cubic root of 5571055621 is about 1772.7432135758.

The spelling of 5571055621 in words is "five billion, five hundred seventy-one million, fifty-five thousand, six hundred twenty-one".