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51304111 = 616712553
BaseRepresentation
bin1100001110110…
…1011010101111
310120112112000021
43003231122233
5101113212421
65031343011
71162035445
oct303553257
9116475007
1051304111
1126a615a1
1215221a67
13a823b81
146b56b95
154786341
hex30ed6af

51304111 has 8 divisors (see below), whose sum is σ = 52927664. Its totient is φ = 49705920.

The previous prime is 51304109. The next prime is 51304129. The reversal of 51304111 is 11140315.

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

It is a cyclic number.

It is not a de Polignac number, because 51304111 - 21 = 51304109 is a prime.

It is a super-2 number, since 2×513041112 = 5264223611000642, 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 (51304151) 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, 2190 + ... + 10363.

It is an arithmetic number, because the mean of its divisors is an integer number (6615958).

Almost surely, 251304111 is an apocalyptic number.

51304111 is a deficient number, since it is larger than the sum of its proper divisors (1623553).

51304111 is a wasteful number, since it uses less digits than its factorization.

51304111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12681.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 51304111 is about 7162.6888107749. The cubic root of 51304111 is about 371.5786240230.

Adding to 51304111 its reverse (11140315), we get a palindrome (62444426).

It can be divided in two parts, 51304 and 111, that added together give a palindrome (51415).

The spelling of 51304111 in words is "fifty-one million, three hundred four thousand, one hundred eleven".

Divisors: 1 61 67 4087 12553 765733 841051 51304111