[go: up one dir, main page]

Search a number
-
+
2221556001 = 37105788381
BaseRepresentation
bin1000010001101010…
…0100000100100001
312201211020201220220
42010122210010201
514022204243001
61004235353253
7106023625440
oct20432440441
95654221826
102221556001
11a400129a5
1251bbb2829
1329533b0a2
1417108cd57
15d0078c36
hex846a4121

2221556001 has 8 divisors (see below), whose sum is σ = 3385228224. Its totient is φ = 1269460560.

The previous prime is 2221555979. The next prime is 2221556047. The reversal of 2221556001 is 1006551222.

It is a happy number.

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

It is not a de Polignac number, because 2221556001 - 211 = 2221553953 is a prime.

It is a super-2 number, since 2×22215560012 = 9870622131158224002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2221556081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52894170 + ... + 52894211.

It is an arithmetic number, because the mean of its divisors is an integer number (423153528).

Almost surely, 22221556001 is an apocalyptic number.

2221556001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2221556001 is a deficient number, since it is larger than the sum of its proper divisors (1163672223).

2221556001 is a wasteful number, since it uses less digits than its factorization.

2221556001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105788391.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2221556001 is about 47133.3852062421. The cubic root of 2221556001 is about 1304.8254589601.

The spelling of 2221556001 in words is "two billion, two hundred twenty-one million, five hundred fifty-six thousand, one".

Divisors: 1 3 7 21 105788381 317365143 740518667 2221556001