55335455551 has 4 divisors (see below), whose sum is σ = 55339031704. Its totient is φ = 55331879400.

The previous prime is 55335455509. The next prime is 55335455573. The reversal of 55335455551 is 15555453355.

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 55335455551 - 2¹⁹ = 55334931263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55335458551) 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, 1764765 + ... + 1795846.

It is an arithmetic number, because the mean of its divisors is an integer number (13834757926).

Almost surely, 2^55335455551 is an apocalyptic number.

55335455551 is a deficient number, since it is larger than the sum of its proper divisors (3576153).

55335455551 is a wasteful number, since it uses less digits than its factorization.

55335455551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576152.

The product of its digits is 2812500, while the sum is 46.

The spelling of 55335455551 in words is "fifty-five billion, three hundred thirty-five million, four hundred fifty-five thousand, five hundred fifty-one".