55020540311 has 4 divisors (see below), whose sum is σ = 60022407624. Its totient is φ = 50018673000.

The previous prime is 55020540293. The next prime is 55020540317. The reversal of 55020540311 is 11304502055.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55020540311 is a prime.

It is a super-3 number, since 3×55020540311³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55020540317) 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, 2500933640 + ... + 2500933661.

It is an arithmetic number, because the mean of its divisors is an integer number (15005601906).

Almost surely, 2^55020540311 is an apocalyptic number.

55020540311 is a deficient number, since it is larger than the sum of its proper divisors (5001867313).

55020540311 is a wasteful number, since it uses less digits than its factorization.

55020540311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001867312.

The product of its (nonzero) digits is 3000, while the sum is 26.

The spelling of 55020540311 in words is "fifty-five billion, twenty million, five hundred forty thousand, three hundred eleven".