53780352 has 32 divisors (see below), whose sum is σ = 142855080. Its totient is φ = 17926656.
The previous prime is 53780339. The next prime is 53780357. The reversal of 53780352 is 25308735.
It is a tau number, because it is divible by the number of its divisors (32).
It is a super-2 number, since 2×537803522 = 5784652522487808, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (53780357) 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, 69643 + ... + 70410.
Almost surely, 253780352 is an apocalyptic number.
It is an amenable number.
53780352 is an abundant number, since it is smaller than the sum of its proper divisors (89074728).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
53780352 is a wasteful number, since it uses less digits than its factorization.
53780352 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 140070 (or 140058 counting only the distinct ones).
The product of its (nonzero) digits is 25200, while the sum is 33.
The square root of 53780352 is about 7333.5088463845. The cubic root of 53780352 is about 377.4631386606.
The spelling of 53780352 in words is "fifty-three million, seven hundred eighty thousand, three hundred fifty-two".
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