5657640055 has 4 divisors (see below), whose sum is σ = 6789168072. Its totient is φ = 4526112040.

The previous prime is 5657640049. The next prime is 5657640059. The reversal of 5657640055 is 5500467565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5500467565 = 5 ⋅1100093513.

It is not a de Polignac number, because 5657640055 - 2⁷ = 5657639927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5657639993 and 5657640020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5657640059) 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, 565764001 + ... + 565764010.

It is an arithmetic number, because the mean of its divisors is an integer number (1697292018).

Almost surely, 2^5657640055 is an apocalyptic number.

5657640055 is a deficient number, since it is larger than the sum of its proper divisors (1131528017).

5657640055 is a wasteful number, since it uses less digits than its factorization.

5657640055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131528016.

The product of its (nonzero) digits is 630000, while the sum is 43.

The square root of 5657640055 is about 75217.2856130823. The cubic root of 5657640055 is about 1781.8799368690.

The spelling of 5657640055 in words is "five billion, six hundred fifty-seven million, six hundred forty thousand, fifty-five".