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80157 = 3711347
BaseRepresentation
bin10011100100011101
311001221210
4103210131
510031112
61415033
7452460
oct234435
9131853
1080157
1155250
123a479
132a63c
14212d7
1518b3c
hex1391d

80157 has 16 divisors (see below), whose sum is σ = 133632. Its totient is φ = 41520.

The previous prime is 80153. The next prime is 80167. The reversal of 80157 is 75108.

It is a happy number.

It is not a de Polignac number, because 80157 - 22 = 80153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

80157 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80153) 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, 58 + ... + 404.

It is an arithmetic number, because the mean of its divisors is an integer number (8352).

280157 is an apocalyptic number.

It is an amenable number.

80157 is a deficient number, since it is larger than the sum of its proper divisors (53475).

80157 is a wasteful number, since it uses less digits than its factorization.

80157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 80157 is about 283.1201158519. The cubic root of 80157 is about 43.1168625688.

It can be divided in two parts, 801 and 57, that added together give a palindrome (858).

The spelling of 80157 in words is "eighty thousand, one hundred fifty-seven".

Divisors: 1 3 7 11 21 33 77 231 347 1041 2429 3817 7287 11451 26719 80157