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140227541 = 181177431
BaseRepresentation
bin10000101101110…
…11001111010101
3100202212022000122
420112323033111
5241344240131
621525321325
73321625436
oct1026731725
9322768018
10140227541
1172178033
123ab66245
1323089a9c
14148a348d
15c49dd7b
hex85bb3d5

140227541 has 4 divisors (see below), whose sum is σ = 140306784. Its totient is φ = 140148300.

The previous prime is 140227531. The next prime is 140227547. The reversal of 140227541 is 145722041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140227541 - 214 = 140211157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140227541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140227547) 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, 36905 + ... + 40526.

It is an arithmetic number, because the mean of its divisors is an integer number (35076696).

Almost surely, 2140227541 is an apocalyptic number.

It is an amenable number.

140227541 is a deficient number, since it is larger than the sum of its proper divisors (79243).

140227541 is an equidigital number, since it uses as much as digits as its factorization.

140227541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79242.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 140227541 is about 11841.7710246399. The cubic root of 140227541 is about 519.5305687043.

Adding to 140227541 its reverse (145722041), we get a palindrome (285949582).

The spelling of 140227541 in words is "one hundred forty million, two hundred twenty-seven thousand, five hundred forty-one".

Divisors: 1 1811 77431 140227541