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53780357 is a prime number
BaseRepresentation
bin1100110100100…
…1111110000101
310202012022210002
43031021332011
5102231432412
65200411045
71222061021
oct315117605
9122168702
1053780357
11283a2a84
1216016a85
13b1accc7
1471dd381
154ac4dc2
hex3349f85

53780357 has 2 divisors, whose sum is σ = 53780358. Its totient is φ = 53780356.

The previous prime is 53780339. The next prime is 53780369. The reversal of 53780357 is 75308735.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44502241 + 9278116 = 6671^2 + 3046^2 .

It is a cyclic number.

It is not a de Polignac number, because 53780357 - 210 = 53779333 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53780357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53780327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26890178 + 26890179.

It is an arithmetic number, because the mean of its divisors is an integer number (26890179).

Almost surely, 253780357 is an apocalyptic number.

It is an amenable number.

53780357 is a deficient number, since it is larger than the sum of its proper divisors (1).

53780357 is an equidigital number, since it uses as much as digits as its factorization.

53780357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 53780357 is about 7333.5091872854. The cubic root of 53780357 is about 377.4631503583.

The spelling of 53780357 in words is "fifty-three million, seven hundred eighty thousand, three hundred fifty-seven".