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55383501 = 3176311721
BaseRepresentation
bin1101001101000…
…1010111001101
310212012202212210
43103101113031
5103134233001
65255021033
71241515635
oct323212715
9125182783
1055383501
1129298498
121666a779
13b621904
1474d96c5
154cdedd6
hex34d15cd

55383501 has 16 divisors (see below), whose sum is σ = 78357888. Its totient is φ = 34675200.

The previous prime is 55383469. The next prime is 55383509. The reversal of 55383501 is 10538355.

It is not a de Polignac number, because 55383501 - 25 = 55383469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55383509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31321 + ... + 33041.

It is an arithmetic number, because the mean of its divisors is an integer number (4897368).

Almost surely, 255383501 is an apocalyptic number.

55383501 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

55383501 is a deficient number, since it is larger than the sum of its proper divisors (22974387).

55383501 is a wasteful number, since it uses less digits than its factorization.

55383501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 55383501 is about 7442.0092045092. The cubic root of 55383501 is about 381.1771002423.

The spelling of 55383501 in words is "fifty-five million, three hundred eighty-three thousand, five hundred one".

Divisors: 1 3 17 51 631 1721 1893 5163 10727 29257 32181 87771 1085951 3257853 18461167 55383501