55973271019 has 4 divisors (see below), whose sum is σ = 55974112120. Its totient is φ = 55972429920.

The previous prime is 55973270999. The next prime is 55973271071. The reversal of 55973271019 is 91017237955.

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

It is a cyclic number.

It is not a de Polignac number, because 55973271019 - 2¹³ = 55973262827 is a prime.

It is a super-2 number, since 2×55973271019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55973271619) 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, 311262 + ... + 456979.

It is an arithmetic number, because the mean of its divisors is an integer number (13993528030).

Almost surely, 2^55973271019 is an apocalyptic number.

55973271019 is a deficient number, since it is larger than the sum of its proper divisors (841101).

55973271019 is an equidigital number, since it uses as much as digits as its factorization.

55973271019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841100.

The product of its (nonzero) digits is 595350, while the sum is 49.

The spelling of 55973271019 in words is "fifty-five billion, nine hundred seventy-three million, two hundred seventy-one thousand, nineteen".