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72055 = 514411
BaseRepresentation
bin10001100101110111
310122211201
4101211313
54301210
61313331
7420034
oct214567
9118751
1072055
114a155
1235847
1326a49
141c38b
151653a
hex11977

72055 has 4 divisors (see below), whose sum is σ = 86472. Its totient is φ = 57640.

The previous prime is 72053. The next prime is 72073. The reversal of 72055 is 55027.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 72055 - 21 = 72053 is a prime.

It is a Duffinian number.

72055 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72053) 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, 7201 + ... + 7210.

It is an arithmetic number, because the mean of its divisors is an integer number (21618).

272055 is an apocalyptic number.

72055 is a deficient number, since it is larger than the sum of its proper divisors (14417).

72055 is a wasteful number, since it uses less digits than its factorization.

72055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14416.

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 72055 is about 268.4306241844. The cubic root of 72055 is about 41.6122667844.

The spelling of 72055 in words is "seventy-two thousand, fifty-five".

Divisors: 1 5 14411 72055