427245561 has 24 divisors (see below), whose sum is σ = 630227520. Its totient is φ = 278811936.

The previous prime is 427245517. The next prime is 427245601. The reversal of 427245561 is 165542724.

It is a happy number.

It is not a de Polignac number, because 427245561 - 2⁷ = 427245433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (427245361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294540 + ... + 295986.

It is an arithmetic number, because the mean of its divisors is an integer number (26259480).

Almost surely, 2^427245561 is an apocalyptic number.

It is an amenable number.

427245561 is a deficient number, since it is larger than the sum of its proper divisors (202981959).

427245561 is a wasteful number, since it uses less digits than its factorization.

427245561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125 (or 2122 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 427245561 is about 20669.9192306114. The cubic root of 427245561 is about 753.1691445024.

The spelling of 427245561 in words is "four hundred twenty-seven million, two hundred forty-five thousand, five hundred sixty-one".