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1404244550221 = 2371592258351
BaseRepresentation
bin10100011011110011011…
…111110110001001001101
311222020121012212021202121
4110123303133312021031
5141001343101101341
62553033454052541
7203311326510022
oct24336337661115
94866535767677
101404244550221
114a159a492737
121a819a7aa151
13a255c0b0556
144bd7421b549
15267daade4d1
hex146f37f624d

1404244550221 has 4 divisors (see below), whose sum is σ = 1404836810944. Its totient is φ = 1403652289500.

The previous prime is 1404244550173. The next prime is 1404244550249. The reversal of 1404244550221 is 1220554424041.

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 a de Polignac number, because none of the positive numbers 2k-1404244550221 is a prime.

It is a super-2 number, since 2×14042445502212 (a number of 25 digits) 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 (1404244250221) 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, 296126805 + ... + 296131546.

It is an arithmetic number, because the mean of its divisors is an integer number (351209202736).

Almost surely, 21404244550221 is an apocalyptic number.

It is an amenable number.

1404244550221 is a deficient number, since it is larger than the sum of its proper divisors (592260723).

1404244550221 is an equidigital number, since it uses as much as digits as its factorization.

1404244550221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592260722.

The product of its (nonzero) digits is 51200, while the sum is 34.

Adding to 1404244550221 its reverse (1220554424041), we get a palindrome (2624798974262).

The spelling of 1404244550221 in words is "one trillion, four hundred four billion, two hundred forty-four million, five hundred fifty thousand, two hundred twenty-one".

Divisors: 1 2371 592258351 1404244550221