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415601561 = 1313172531
BaseRepresentation
bin11000110001011…
…001001110011001
31001222000202011102
4120301121032121
51322343222221
6105123441145
713204361234
oct3061311631
91058022142
10415601561
111a3661671
12b72261b5
13681449ab
143d2a641b
152674630b
hex18c59399

415601561 has 4 divisors (see below), whose sum is σ = 418774224. Its totient is φ = 412428900.

The previous prime is 415601551. The next prime is 415601591. The reversal of 415601561 is 165106514.

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: 165106514 = 282553257.

It is a cyclic number.

It is not a de Polignac number, because 415601561 - 222 = 411407257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (415601551) 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, 1586135 + ... + 1586396.

It is an arithmetic number, because the mean of its divisors is an integer number (104693556).

Almost surely, 2415601561 is an apocalyptic number.

It is an amenable number.

415601561 is a deficient number, since it is larger than the sum of its proper divisors (3172663).

415601561 is a wasteful number, since it uses less digits than its factorization.

415601561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172662.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 415601561 is about 20386.3081748511. The cubic root of 415601561 is about 746.2638254235.

The spelling of 415601561 in words is "four hundred fifteen million, six hundred one thousand, five hundred sixty-one".

Divisors: 1 131 3172531 415601561