55775307533 has 8 divisors (see below), whose sum is σ = 63491259456. Its totient is φ = 48500267200.

The previous prime is 55775307517. The next prime is 55775307571. The reversal of 55775307533 is 33570357755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55775307533 - 2⁴ = 55775307517 is a prime.

It is a super-2 number, since 2×55775307533² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55775307503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110227628 + ... + 110228133.

It is an arithmetic number, because the mean of its divisors is an integer number (7936407432).

Almost surely, 2^55775307533 is an apocalyptic number.

It is an amenable number.

55775307533 is a deficient number, since it is larger than the sum of its proper divisors (7715951923).

55775307533 is a wasteful number, since it uses less digits than its factorization.

55775307533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220455795.

The product of its (nonzero) digits is 5788125, while the sum is 50.

The spelling of 55775307533 in words is "fifty-five billion, seven hundred seventy-five million, three hundred seven thousand, five hundred thirty-three".