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61379053 = 257238829
BaseRepresentation
bin1110101000100…
…1000111101101
311021111101020021
43222021013231
5111203112203
610031322141
71343466451
oct352110755
9137441207
1061379053
1131712a9a
1218680351
13c940888
14821a661
1555c65bd
hex3a891ed

61379053 has 4 divisors (see below), whose sum is σ = 61618140. Its totient is φ = 61139968.

The previous prime is 61379047. The next prime is 61379083. The reversal of 61379053 is 35097316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47858724 + 13520329 = 6918^2 + 3677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-61379053 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 (61379023) 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, 119158 + ... + 119671.

It is an arithmetic number, because the mean of its divisors is an integer number (15404535).

Almost surely, 261379053 is an apocalyptic number.

It is an amenable number.

61379053 is a deficient number, since it is larger than the sum of its proper divisors (239087).

61379053 is a wasteful number, since it uses less digits than its factorization.

61379053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239086.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 61379053 is about 7834.4784765803. The cubic root of 61379053 is about 394.4634128344.

The spelling of 61379053 in words is "sixty-one million, three hundred seventy-nine thousand, fifty-three".

Divisors: 1 257 238829 61379053