428551055 has 8 divisors (see below), whose sum is σ = 514455072. Its totient is φ = 342711648.

The previous prime is 428551033. The next prime is 428551069. The reversal of 428551055 is 550155824.

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

It is a cyclic number.

It is not a de Polignac number, because 428551055 - 2²⁰ = 427502479 is a prime.

It is a super-2 number, since 2×428551055² = 367312013483226050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107 + ... + 29276.

It is an arithmetic number, because the mean of its divisors is an integer number (64306884).

Almost surely, 2^428551055 is an apocalyptic number.

428551055 is a deficient number, since it is larger than the sum of its proper divisors (85904017).

428551055 is a wasteful number, since it uses less digits than its factorization.

428551055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32305.

The product of its (nonzero) digits is 40000, while the sum is 35.

The square root of 428551055 is about 20701.4747059237. The cubic root of 428551055 is about 753.9354938049.

The spelling of 428551055 in words is "four hundred twenty-eight million, five hundred fifty-one thousand, fifty-five".