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53842997 = 134141769
BaseRepresentation
bin1100110101100…
…1010000110101
310202022111201002
43031121100311
5102240433442
65202013045
71222441445
oct315312065
9122274632
1053842997
112843604a
1216047185
13b202680
147218125
154ad8732
hex3359435

53842997 has 4 divisors (see below), whose sum is σ = 57984780. Its totient is φ = 49701216.

The previous prime is 53842991. The next prime is 53843081. The reversal of 53842997 is 79924835.

It is a happy number.

53842997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 25816561 + 28026436 = 5081^2 + 5294^2 .

It is a cyclic number.

It is not a de Polignac number, because 53842997 - 26 = 53842933 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 (53842991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2070872 + ... + 2070897.

It is an arithmetic number, because the mean of its divisors is an integer number (14496195).

Almost surely, 253842997 is an apocalyptic number.

It is an amenable number.

53842997 is a deficient number, since it is larger than the sum of its proper divisors (4141783).

53842997 is a wasteful number, since it uses less digits than its factorization.

53842997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141782.

The product of its digits is 544320, while the sum is 47.

The square root of 53842997 is about 7337.7787510935. The cubic root of 53842997 is about 377.6096419969.

The spelling of 53842997 in words is "fifty-three million, eight hundred forty-two thousand, nine hundred ninety-seven".

Divisors: 1 13 4141769 53842997