55771572355 has 4 divisors (see below), whose sum is σ = 66925886832. Its totient is φ = 44617257880.

The previous prime is 55771572319. The next prime is 55771572361. The reversal of 55771572355 is 55327517755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55327517755 = 5 ⋅11065503551.

It is not a de Polignac number, because 55771572355 - 2¹¹ = 55771570307 is a prime.

It is a super-2 number, since 2×55771572355² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5577157231 + ... + 5577157240.

It is an arithmetic number, because the mean of its divisors is an integer number (16731471708).

Almost surely, 2^55771572355 is an apocalyptic number.

55771572355 is a deficient number, since it is larger than the sum of its proper divisors (11154314477).

55771572355 is a wasteful number, since it uses less digits than its factorization.

55771572355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11154314476.

The product of its digits is 6431250, while the sum is 52.

The spelling of 55771572355 in words is "fifty-five billion, seven hundred seventy-one million, five hundred seventy-two thousand, three hundred fifty-five".