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53954381 = 138946633
BaseRepresentation
bin1100110111010…
…0011101001101
310202112011111102
43031310131031
5102303020011
65204232445
71223414255
oct315643515
9122464442
1053954381
11285017a8
121609b725
13b241290
147246965
154b0b73b
hex337474d

53954381 has 8 divisors (see below), whose sum is σ = 58758840. Its totient is φ = 49243392.

The previous prime is 53954377. The next prime is 53954419. The reversal of 53954381 is 18345935.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 532900 + 53421481 = 730^2 + 7309^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53954381 - 22 = 53954377 is a prime.

It is a super-2 number, since 2×539543812 = 5822150458186322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53954321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22160 + ... + 24473.

It is an arithmetic number, because the mean of its divisors is an integer number (7344855).

Almost surely, 253954381 is an apocalyptic number.

It is an amenable number.

53954381 is a deficient number, since it is larger than the sum of its proper divisors (4804459).

53954381 is a wasteful number, since it uses less digits than its factorization.

53954381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46735.

The product of its digits is 64800, while the sum is 38.

The square root of 53954381 is about 7345.3645927210. The cubic root of 53954381 is about 377.8698473180.

The spelling of 53954381 in words is "fifty-three million, nine hundred fifty-four thousand, three hundred eighty-one".

Divisors: 1 13 89 1157 46633 606229 4150337 53954381