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61204317 = 320401439
BaseRepresentation
bin1110100101111…
…0011101011101
311021011111112120
43221132131131
5111132014232
610023453153
71342141146
oct351363535
9137144476
1061204317
1131603789
12185b71b9
13c8ac195
1481b2acd
15558e92c
hex3a5e75d

61204317 has 4 divisors (see below), whose sum is σ = 81605760. Its totient is φ = 40802876.

The previous prime is 61204307. The next prime is 61204337. The reversal of 61204317 is 71340216.

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 61204317 - 27 = 61204189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61204307) 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, 10200717 + ... + 10200722.

It is an arithmetic number, because the mean of its divisors is an integer number (20401440).

Almost surely, 261204317 is an apocalyptic number.

It is an amenable number.

61204317 is a deficient number, since it is larger than the sum of its proper divisors (20401443).

61204317 is a wasteful number, since it uses less digits than its factorization.

61204317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20401442.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 61204317 is about 7823.3187970324. The cubic root of 61204317 is about 394.0887330532.

The spelling of 61204317 in words is "sixty-one million, two hundred four thousand, three hundred seventeen".

Divisors: 1 3 20401439 61204317