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53788885 = 561176357
BaseRepresentation
bin1100110100110…
…0000011010101
310202012202110221
43031030003111
5102232221020
65200514341
71222124623
oct315140325
9122182427
1053788885
11283a9427
121601b9b1
13b1b3b57
147202513
154ac76aa
hex334c0d5

53788885 has 8 divisors (see below), whose sum is σ = 65605176. Its totient is φ = 42325440.

The previous prime is 53788883. The next prime is 53788909. The reversal of 53788885 is 58888735.

It can be written as a sum of positive squares in 4 ways, for example, as 191844 + 53597041 = 438^2 + 7321^2 .

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

It is not a de Polignac number, because 53788885 - 21 = 53788883 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 (53788883) 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, 87874 + ... + 88483.

It is an arithmetic number, because the mean of its divisors is an integer number (8200647).

Almost surely, 253788885 is an apocalyptic number.

It is an amenable number.

53788885 is a deficient number, since it is larger than the sum of its proper divisors (11816291).

53788885 is a wasteful number, since it uses less digits than its factorization.

53788885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176423.

The product of its digits is 2150400, while the sum is 52.

The square root of 53788885 is about 7334.0906048398. The cubic root of 53788885 is about 377.4831008619.

The spelling of 53788885 in words is "fifty-three million, seven hundred eighty-eight thousand, eight hundred eighty-five".

Divisors: 1 5 61 305 176357 881785 10757777 53788885