55651005511 has 4 divisors (see below), whose sum is σ = 55942372224. Its totient is φ = 55359638800.

The previous prime is 55651005467. The next prime is 55651005521. The reversal of 55651005511 is 11550015655.

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 55651005511 - 2⁷ = 55651005383 is a prime.

It is a super-2 number, since 2×55651005511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55651005521) 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, 145683070 + ... + 145683451.

It is an arithmetic number, because the mean of its divisors is an integer number (13985593056).

Almost surely, 2^55651005511 is an apocalyptic number.

55651005511 is a deficient number, since it is larger than the sum of its proper divisors (291366713).

55651005511 is a wasteful number, since it uses less digits than its factorization.

55651005511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291366712.

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 55651005511 in words is "fifty-five billion, six hundred fifty-one million, five thousand, five hundred eleven".