Search a number
-
+
53001431 = 7195373103
BaseRepresentation
bin1100101000101…
…1110011010111
310200201202021222
43022023303113
5102032021211
65132000555
71212335060
oct312136327
9120652258
1053001431
1127a1083a
121590015b
13ac995c2
147079567
1549be1db
hex328bcd7

53001431 has 32 divisors (see below), whose sum is σ = 66493440. Its totient is φ = 41243904.

The previous prime is 53001409. The next prime is 53001437. The reversal of 53001431 is 13410035.

It is a cyclic number.

It is not a de Polignac number, because 53001431 - 214 = 52985047 is a prime.

It is a super-2 number, since 2×530014312 = 5618303376095522, which contains 22 as substring.

It is a Duffinian number.

53001431 is a modest number, since divided by 1431 gives 53 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53001437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 514526 + ... + 514628.

It is an arithmetic number, because the mean of its divisors is an integer number (2077920).

Almost surely, 253001431 is an apocalyptic number.

53001431 is a deficient number, since it is larger than the sum of its proper divisors (13492009).

53001431 is a wasteful number, since it uses less digits than its factorization.

53001431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 53001431 is about 7280.2081701006. The cubic root of 53001431 is about 375.6319560489.

Adding to 53001431 its reverse (13410035), we get a palindrome (66411466).

The spelling of 53001431 in words is "fifty-three million, one thousand, four hundred thirty-one".

Divisors: 1 7 19 53 73 103 133 371 511 721 1007 1387 1957 3869 5459 7049 7519 9709 13699 27083 38213 52633 73511 103721 142861 398507 514577 726047 1000027 2789549 7571633 53001431