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61190653 = 68389591
BaseRepresentation
bin1110100101101…
…1000111111101
311021010210210111
43221123013331
5111131100103
610023310021
71342053256
oct351330775
9137123714
1061190653
11315a4497
12185ab311
13c8a5bb4
1481abb2d
15558a86d
hex3a5b1fd

61190653 has 4 divisors (see below), whose sum is σ = 61280928. Its totient is φ = 61100380.

The previous prime is 61190651. The next prime is 61190669. The reversal of 61190653 is 35609116.

It is the 3194-th star number.

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 61190653 - 21 = 61190651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61190651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44113 + ... + 45478.

It is an arithmetic number, because the mean of its divisors is an integer number (15320232).

Almost surely, 261190653 is an apocalyptic number.

It is an amenable number.

61190653 is a deficient number, since it is larger than the sum of its proper divisors (90275).

61190653 is an equidigital number, since it uses as much as digits as its factorization.

61190653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90274.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 61190653 is about 7822.4454616188. The cubic root of 61190653 is about 394.0594038083.

Adding to 61190653 its reverse (35609116), we get a palindrome (96799769).

The spelling of 61190653 in words is "sixty-one million, one hundred ninety thousand, six hundred fifty-three".

Divisors: 1 683 89591 61190653