55435503553 has 4 divisors (see below), whose sum is σ = 56614982400. Its totient is φ = 54256024708.

The previous prime is 55435503547. The next prime is 55435503559. The reversal of 55435503553 is 35530553455.

It is a happy number.

55435503553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35530553455 = 5 ⋅7106110691.

It is an interprime number because it is at equal distance from previous prime (55435503547) and next prime (55435503559).

It is a cyclic number.

It is not a de Polignac number, because 55435503553 - 2³³ = 46845568961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55435503559) 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, 589739353 + ... + 589739446.

It is an arithmetic number, because the mean of its divisors is an integer number (14153745600).

Almost surely, 2^55435503553 is an apocalyptic number.

It is an amenable number.

55435503553 is a deficient number, since it is larger than the sum of its proper divisors (1179478847).

55435503553 is a wasteful number, since it uses less digits than its factorization.

55435503553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179478846.

The product of its (nonzero) digits is 1687500, while the sum is 43.

The spelling of 55435503553 in words is "fifty-five billion, four hundred thirty-five million, five hundred three thousand, five hundred fifty-three".