428580051 has 4 divisors (see below), whose sum is σ = 571440072. Its totient is φ = 285720032.

The previous prime is 428580041. The next prime is 428580073. The reversal of 428580051 is 150085824.

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 428580051 - 2¹³ = 428571859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 428579994 and 428580021.

It is not an unprimeable number, because it can be changed into a prime (428580041) 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, 71430006 + ... + 71430011.

It is an arithmetic number, because the mean of its divisors is an integer number (142860018).

Almost surely, 2^428580051 is an apocalyptic number.

428580051 is a deficient number, since it is larger than the sum of its proper divisors (142860021).

428580051 is a wasteful number, since it uses less digits than its factorization.

428580051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142860020.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 428580051 is about 20702.1750306580. The cubic root of 428580051 is about 753.9524973181.

The spelling of 428580051 in words is "four hundred twenty-eight million, five hundred eighty thousand, fifty-one".