Search a number
56561558 = 228280779
BaseRepresentation
bin1101011111000…
…0111110010110
310221102121212112
43113300332112
5103434432213
65340151022
71254523334
oct327607626
9127377775
1056561558
1129a22599
1216b38472
13b944ba1
147724b54
154e73ea8
hex35f0f96

56561558 has 4 divisors (see below), whose sum is σ = 84842340. Its totient is φ = 28280778.

The previous prime is 56561521. The next prime is 56561563. The reversal of 56561558 is 85516565.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14140388 + ... + 14140391.

It is an arithmetic number, because the mean of its divisors is an integer number (21210585).

Almost surely, 256561558 is an apocalyptic number.

56561558 is a deficient number, since it is larger than the sum of its proper divisors (28280782).

56561558 is a wasteful number, since it uses less digits than its factorization.

56561558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28280781.

The product of its digits is 180000, while the sum is 41.

The square root of 56561558 is about 7520.7418517059. The cubic root of 56561558 is about 383.8608210530.

The spelling of 56561558 in words is "fifty-six million, five hundred sixty-one thousand, five hundred fifty-eight".

Divisors: 1 2 28280779 56561558