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6442551053 = 11235736911
BaseRepresentation
bin1100000000000000…
…11000011100001101
3121121222210111120222
412000000120130031
5101143243113203
62543142121125
7315436531451
oct60000303415
917558714528
106442551053
112806719a64
1212b97201a5
137b89880b3
144518cc661
1527a904038
hex18001870d

6442551053 has 4 divisors (see below), whose sum is σ = 6448289088. Its totient is φ = 6436813020.

The previous prime is 6442551043. The next prime is 6442551133. The reversal of 6442551053 is 3501552446.

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.

It is a cyclic number.

It is not a de Polignac number, because 6442551053 - 210 = 6442550029 is a prime.

It is a super-2 number, since 2×64425510532 = 83012928141022817618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442551043) 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, 2867333 + ... + 2869578.

It is an arithmetic number, because the mean of its divisors is an integer number (1612072272).

Almost surely, 26442551053 is an apocalyptic number.

It is an amenable number.

6442551053 is a deficient number, since it is larger than the sum of its proper divisors (5738035).

6442551053 is a wasteful number, since it uses less digits than its factorization.

6442551053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5738034.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 6442551053 is about 80265.5035055534. The cubic root of 6442551053 is about 1860.7411249554.

The spelling of 6442551053 in words is "six billion, four hundred forty-two million, five hundred fifty-one thousand, fifty-three".

Divisors: 1 1123 5736911 6442551053